# CVE-2025-3875: Sender Spoofing via Malformed From Header in Thunderbird

CVE-2025-3875 is fixed in 139 products on 2 platforms, first by Mozilla Thunderbird ESR (af) 128.10.0, released April 29, 2025. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2025-3875
- Priority: High
- CVSS: 8.8 (Important)
- EPSS: 0.0040
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 14, 2025
- Weakness: CWE-290: Authentication Bypass by Spoofing
- Vendor advisory: https://nvd.nist.gov/vuln/detail/CVE-2025-3875

## Description

Thunderbird parses addresses in a way that can allow sender spoofing in case the server allows an invalid From address to be used. For example, if the From header contains an (invalid) value "Spoofed Name  ", Thunderbird treats spoofed@example.com as the actual address. This vulnerability was fixed in Thunderbird 128.10.1 and Thunderbird 138.0.1.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Windows apps | Mozilla Thunderbird (af) | 138.0.1 | [Mozilla Thunderbird (af) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.af-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (ar) | 138.0.1 | [Mozilla Thunderbird (ar) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.ar-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (ast) | 138.0.1 | [Mozilla Thunderbird (ast) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.ast-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (be) | 138.0.1 | [Mozilla Thunderbird (be) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.be-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (bg) | 138.0.1 | [Mozilla Thunderbird (bg) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.bg-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (br) | 138.0.1 | [Mozilla Thunderbird (br) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.br-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (ca) | 138.0.1 | [Mozilla Thunderbird (ca) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.ca-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (cak) | 138.0.1 | [Mozilla Thunderbird (cak) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.cak-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (cs) | 138.0.1 | [Mozilla Thunderbird (cs) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.cs-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (cy) | 138.0.1 | [Mozilla Thunderbird (cy) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.cy-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (da) | 138.0.1 | [Mozilla Thunderbird (da) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.da-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (de) | 138.0.1 | [Mozilla Thunderbird (de) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.de-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (dsb) | 138.0.1 | [Mozilla Thunderbird (dsb) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.dsb-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (el) | 138.0.1 | [Mozilla Thunderbird (el) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.el-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (en-CA) | 138.0.1 | [Mozilla Thunderbird (en-CA) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.en-ca-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (en-GB) | 138.0.1 | [Mozilla Thunderbird (en-GB) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.en-gb-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (en-US) | 138.0.1 | [Mozilla Thunderbird (en-US) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (es-AR) | 138.0.1 | [Mozilla Thunderbird (es-AR) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.es-ar-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (es-ES) | 138.0.1 | [Mozilla Thunderbird (es-ES) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.es-es-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (es-MX) | 138.0.1 | [Mozilla Thunderbird (es-MX) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.es-mx-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (et) | 138.0.1 | [Mozilla Thunderbird (et) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.et-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (eu) | 138.0.1 | [Mozilla Thunderbird (eu) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.eu-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (fi) | 138.0.1 | [Mozilla Thunderbird (fi) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.fi-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (fr) | 138.0.1 | [Mozilla Thunderbird (fr) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.fr-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (fy-NL) | 138.0.1 | [Mozilla Thunderbird (fy-NL) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.fy-nl-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (ga-IE) | 138.0.1 | [Mozilla Thunderbird (ga-IE) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.ga-ie-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (gd) | 138.0.1 | [Mozilla Thunderbird (gd) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.gd-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (gl) | 138.0.1 | [Mozilla Thunderbird (gl) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.gl-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (he) | 138.0.1 | [Mozilla Thunderbird (he) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.he-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (hr) | 138.0.1 | [Mozilla Thunderbird (hr) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.hr-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (hsb) | 138.0.1 | [Mozilla Thunderbird (hsb) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.hsb-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (hu) | 138.0.1 | [Mozilla Thunderbird (hu) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.hu-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (hy-AM) | 138.0.1 | [Mozilla Thunderbird (hy-AM) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.hy-am-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (id) | 138.0.1 | [Mozilla Thunderbird (id) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.id-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (is) | 138.0.1 | [Mozilla Thunderbird (is) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.is-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (it) | 138.0.1 | [Mozilla Thunderbird (it) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.it-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (ja) | 138.0.1 | [Mozilla Thunderbird (ja) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.ja-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (ka) | 138.0.1 | [Mozilla Thunderbird (ka) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.ka-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (kab) | 138.0.1 | [Mozilla Thunderbird (kab) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.kab-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (kk) | 138.0.1 | [Mozilla Thunderbird (kk) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.kk-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (ko) | 138.0.1 | [Mozilla Thunderbird (ko) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.ko-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (lt) | 138.0.1 | [Mozilla Thunderbird (lt) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.lt-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (lv) | 138.0.1 | [Mozilla Thunderbird (lv) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.lv-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (ms) | 138.0.1 | [Mozilla Thunderbird (ms) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.ms-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (nb-NO) | 138.0.1 | [Mozilla Thunderbird (nb-NO) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.nb-no-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (nl) | 138.0.1 | [Mozilla Thunderbird (nl) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.nl-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (nn-NO) | 138.0.1 | [Mozilla Thunderbird (nn-NO) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.nn-no-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (pa-IN) | 138.0.1 | [Mozilla Thunderbird (pa-IN) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.pa-in-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (pl) | 138.0.1 | [Mozilla Thunderbird (pl) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.pl-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (pt-BR) | 138.0.1 | [Mozilla Thunderbird (pt-BR) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.pt-br-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (pt-PT) | 138.0.1 | [Mozilla Thunderbird (pt-PT) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.pt-pt-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (rm) | 138.0.1 | [Mozilla Thunderbird (rm) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.rm-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (ro) | 138.0.1 | [Mozilla Thunderbird (ro) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.ro-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (ru) | 138.0.1 | [Mozilla Thunderbird (ru) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.ru-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (sk) | 138.0.1 | [Mozilla Thunderbird (sk) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.sk-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (sl) | 138.0.1 | [Mozilla Thunderbird (sl) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.sl-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (sq) | 138.0.1 | [Mozilla Thunderbird (sq) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.sq-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (sr) | 138.0.1 | [Mozilla Thunderbird (sr) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.sr-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (sv-SE) | 138.0.1 | [Mozilla Thunderbird (sv-SE) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.sv-se-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (th) | 138.0.1 | [Mozilla Thunderbird (th) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.th-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (tr) | 138.0.1 | [Mozilla Thunderbird (tr) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.tr-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (uk) | 138.0.1 | [Mozilla Thunderbird (uk) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.uk-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (uz) | 138.0.1 | [Mozilla Thunderbird (uz) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.uz-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (vi) | 138.0.1 | [Mozilla Thunderbird (vi) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.vi-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (zh-CN) | 138.0.1 | [Mozilla Thunderbird (zh-CN) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.zh-cn-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird (zh-TW) | 138.0.1 | [Mozilla Thunderbird (zh-TW) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.zh-tw-138.0.1.md) | May 13, 2025 |
| Windows apps | Mozilla Thunderbird ESR (af) | 128.10.0 | [Mozilla Thunderbird ESR (af) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.af-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (ar) | 128.10.0 | [Mozilla Thunderbird ESR (ar) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.ar-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (ast) | 128.10.0 | [Mozilla Thunderbird ESR (ast) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.ast-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (be) | 128.10.0 | [Mozilla Thunderbird ESR (be) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.be-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (bg) | 128.10.0 | [Mozilla Thunderbird ESR (bg) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.bg-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (br) | 128.10.0 | [Mozilla Thunderbird ESR (br) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.br-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (ca) | 128.10.0 | [Mozilla Thunderbird ESR (ca) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.ca-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (cak) | 128.10.0 | [Mozilla Thunderbird ESR (cak) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.cak-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (cs) | 128.10.0 | [Mozilla Thunderbird ESR (cs) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.cs-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (cy) | 128.10.0 | [Mozilla Thunderbird ESR (cy) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.cy-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (da) | 128.10.0 | [Mozilla Thunderbird ESR (da) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.da-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (de) | 128.10.0 | [Mozilla Thunderbird ESR (de) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.de-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (dsb) | 128.10.0 | [Mozilla Thunderbird ESR (dsb) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.dsb-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (el) | 128.10.0 | [Mozilla Thunderbird ESR (el) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.el-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (en-CA) | 128.10.0 | [Mozilla Thunderbird ESR (en-CA) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.en-ca-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (en-GB) | 128.10.0 | [Mozilla Thunderbird ESR (en-GB) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.en-gb-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (en-US) | 128.10.0 | [Mozilla Thunderbird ESR (en-US) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (es-AR) | 128.10.0 | [Mozilla Thunderbird ESR (es-AR) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.es-ar-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (es-ES) | 128.10.0 | [Mozilla Thunderbird ESR (es-ES) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.es-es-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (es-MX) | 128.10.0 | [Mozilla Thunderbird ESR (es-MX) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.es-mx-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (et) | 128.10.0 | [Mozilla Thunderbird ESR (et) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.et-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (eu) | 128.10.0 | [Mozilla Thunderbird ESR (eu) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.eu-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (fi) | 128.10.0 | [Mozilla Thunderbird ESR (fi) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.fi-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (fr) | 128.10.0 | [Mozilla Thunderbird ESR (fr) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.fr-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (fy-NL) | 128.10.0 | [Mozilla Thunderbird ESR (fy-NL) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.fy-nl-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (ga-IE) | 128.10.0 | [Mozilla Thunderbird ESR (ga-IE) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.ga-ie-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (gd) | 128.10.0 | [Mozilla Thunderbird ESR (gd) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.gd-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (gl) | 128.10.0 | [Mozilla Thunderbird ESR (gl) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.gl-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (he) | 128.10.0 | [Mozilla Thunderbird ESR (he) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.he-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (hr) | 128.10.0 | [Mozilla Thunderbird ESR (hr) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.hr-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (hsb) | 128.10.0 | [Mozilla Thunderbird ESR (hsb) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.hsb-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (hu) | 128.10.0 | [Mozilla Thunderbird ESR (hu) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.hu-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (hy-AM) | 128.10.0 | [Mozilla Thunderbird ESR (hy-AM) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.hy-am-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (id) | 128.10.0 | [Mozilla Thunderbird ESR (id) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.id-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (is) | 128.10.0 | [Mozilla Thunderbird ESR (is) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.is-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (it) | 128.10.0 | [Mozilla Thunderbird ESR (it) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.it-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (ja) | 128.10.0 | [Mozilla Thunderbird ESR (ja) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.ja-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (ka) | 128.10.0 | [Mozilla Thunderbird ESR (ka) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.ka-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (kab) | 128.10.0 | [Mozilla Thunderbird ESR (kab) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.kab-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (kk) | 128.10.0 | [Mozilla Thunderbird ESR (kk) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.kk-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (ko) | 128.10.0 | [Mozilla Thunderbird ESR (ko) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.ko-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (lt) | 128.10.0 | [Mozilla Thunderbird ESR (lt) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.lt-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (lv) | 128.10.0 | [Mozilla Thunderbird ESR (lv) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.lv-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (ms) | 128.10.0 | [Mozilla Thunderbird ESR (ms) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.ms-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (nb-NO) | 128.10.0 | [Mozilla Thunderbird ESR (nb-NO) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.nb-no-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (nl) | 128.10.0 | [Mozilla Thunderbird ESR (nl) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.nl-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (nn-NO) | 128.10.0 | [Mozilla Thunderbird ESR (nn-NO) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.nn-no-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (pa-IN) | 128.10.0 | [Mozilla Thunderbird ESR (pa-IN) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.pa-in-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (pl) | 128.10.0 | [Mozilla Thunderbird ESR (pl) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.pl-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (pt-BR) | 128.10.0 | [Mozilla Thunderbird ESR (pt-BR) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.pt-br-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (pt-PT) | 128.10.0 | [Mozilla Thunderbird ESR (pt-PT) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.pt-pt-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (rm) | 128.10.0 | [Mozilla Thunderbird ESR (rm) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.rm-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (ro) | 128.10.0 | [Mozilla Thunderbird ESR (ro) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.ro-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (ru) | 128.10.0 | [Mozilla Thunderbird ESR (ru) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.ru-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (sk) | 128.10.0 | [Mozilla Thunderbird ESR (sk) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.sk-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (sl) | 128.10.0 | [Mozilla Thunderbird ESR (sl) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.sl-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (sq) | 128.10.0 | [Mozilla Thunderbird ESR (sq) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.sq-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (sr) | 128.10.0 | [Mozilla Thunderbird ESR (sr) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.sr-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (sv-SE) | 128.10.0 | [Mozilla Thunderbird ESR (sv-SE) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.sv-se-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (th) | 128.10.0 | [Mozilla Thunderbird ESR (th) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.th-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (tr) | 128.10.0 | [Mozilla Thunderbird ESR (tr) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.tr-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (uk) | 128.10.0 | [Mozilla Thunderbird ESR (uk) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.uk-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (uz) | 128.10.0 | [Mozilla Thunderbird ESR (uz) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.uz-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (vi) | 128.10.0 | [Mozilla Thunderbird ESR (vi) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.vi-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (zh-CN) | 128.10.0 | [Mozilla Thunderbird ESR (zh-CN) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.zh-cn-128.10.0.md) | Apr 29, 2025 |
| Windows apps | Mozilla Thunderbird ESR (zh-TW) | 128.10.0 | [Mozilla Thunderbird ESR (zh-TW) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.zh-tw-128.10.0.md) | Apr 29, 2025 |
| Linux | MozillaThunderbird opensuse-leap 15.6 | 128.10.1-150200.8.215.1 | [SUSE-SU-2025:01660-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-01660-1.md) | May 22, 2025 |
| Linux | MozillaThunderbird sles 15.6 | 128.10.1-150200.8.215.1 | [SUSE-SU-2025:01660-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-01660-1.md) | May 22, 2025 |
| Linux | MozillaThunderbird sles 15.7 | 128.10.1-150200.8.215.1 | [SUSE-SU-2025:01660-2](https://patchblox.com/security/data/fix/linux/suse-su-2025-01660-2.md) | May 29, 2025 |
| Linux | thunderbird Debian 12.15 (bookworm) | 1:128.10.1esr-1~deb12u1 | [DSA-5921-1](https://patchblox.com/security/data/fix/linux/dsa-5921-1.md) | May 16, 2025 |
| Linux | thunderbird Debian 13.5 (trixie) | 1:128.10.1esr-1 | [DEBIAN-CVE-2025-3875](https://patchblox.com/security/data/fix/linux/debian-cve-2025-3875.md) | May 14, 2025 |
| Linux | thunderbird Debian 14 | 1:128.10.1esr-1 | [DEBIAN-CVE-2025-3875](https://patchblox.com/security/data/fix/linux/debian-cve-2025-3875.md) | May 14, 2025 |
| Linux | thunderbird RHEL 10 | 128.10.1-1.el10_0 | [RHSA-2025:8196](https://patchblox.com/security/data/fix/linux/rhsa-2025-8196.md) | May 14, 2025 |
| Linux | thunderbird RHEL 8 | 0:128.11.0-1.el8_10 | [RHSA-2025:8756](https://patchblox.com/security/data/fix/linux/rhsa-2025-8756.md) | Jun 10, 2025 |
| Linux | thunderbird RHEL 9 | 0:128.10.1-1.el9_6 | [RHSA-2025:8203](https://patchblox.com/security/data/fix/linux/rhsa-2025-8203.md) | May 27, 2025 |
| Linux | thunderbird Ubuntu 22.04.1 LTS (jammy) | 1:128.12.0+build1-0ubuntu0.22.04.1 | [thunderbird 1:128.12.0+build1-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-thunderbird-1-128.12.0-build1-0ubuntu0.22.04.1.md) | Jun 24, 2025 |
| Linux | thunderbird almalinux 10 | 128.10.1-1.el10_0.alma.1 | [ALSA-2025:8196](https://patchblox.com/security/data/fix/linux/alsa-2025-8196.md) | May 27, 2025 |
| Linux | thunderbird almalinux 8 | 128.11.0-1.el8_10.alma.1 | [ALSA-2025:8756](https://patchblox.com/security/data/fix/linux/alsa-2025-8756.md) | Jun 10, 2025 |
| Linux | thunderbird ol 10 | 0:128.11.0-1.0.1.el10_0 | [ELSA-2025-8196](https://patchblox.com/security/data/fix/linux/elsa-2025-8196.md) | Jun 30, 2025 |
| Linux | thunderbird ol 8 | 0:128.11.0-1.0.1.el8_10 | [ELSA-2025-8756](https://patchblox.com/security/data/fix/linux/elsa-2025-8756.md) | Jun 10, 2025 |
| Linux | thunderbird ol 9 | 0:128.10.1-1.0.1.el9_6 | [ELSA-2025-8203](https://patchblox.com/security/data/fix/linux/elsa-2025-8203.md) | May 27, 2025 |
| Linux | thunderbird rocky 10 | 0:128.10.1-1.el10_0 | [RLSA-2025:8196](https://patchblox.com/security/data/fix/linux/rlsa-2025-8196.md) | Oct 3, 2025 |
| Linux | thunderbird rocky 8 | 0:128.11.0-1.el8_10 | [RLSA-2025:8756](https://patchblox.com/security/data/fix/linux/rlsa-2025-8756.md) | Jul 29, 2025 |
| Linux | thunderbird rocky 9 | 0:128.10.1-1.el9_6 | [RLSA-2025:8203](https://patchblox.com/security/data/fix/linux/rlsa-2025-8203.md) | Oct 4, 2025 |
| Linux | thunderbird-gnome-support Ubuntu 22.04.1 LTS (jammy) | 1:128.12.0+build1-0ubuntu0.22.04.1 | [thunderbird-gnome-support 1:128.12.0+build1-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-thunderbird-gnome-support-1-128.12.0-build1-0ubuntu0.22.04.1.md) | Jun 24, 2025 |
| Linux | thunderbird-mozsymbols Ubuntu 22.04.1 LTS (jammy) | 1:128.12.0+build1-0ubuntu0.22.04.1 | [thunderbird-mozsymbols 1:128.12.0+build1-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-thunderbird-mozsymbols-1-128.12.0-build1-0ubuntu0.22.04.1.md) | Jun 24, 2025 |
| Linux | xul-ext-calendar-timezones Ubuntu 22.04.1 LTS (jammy) | 1:128.12.0+build1-0ubuntu0.22.04.1 | [xul-ext-calendar-timezones 1:128.12.0+build1-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-xul-ext-calendar-timezones-1-128.12.0-build1-0ubuntu0.22.04.1.md) | Jun 24, 2025 |
| Linux | xul-ext-gdata-provider Ubuntu 22.04.1 LTS (jammy) | 1:128.12.0+build1-0ubuntu0.22.04.1 | [xul-ext-gdata-provider 1:128.12.0+build1-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-xul-ext-gdata-provider-1-128.12.0-build1-0ubuntu0.22.04.1.md) | Jun 24, 2025 |
| Linux | xul-ext-lightning Ubuntu 22.04.1 LTS (jammy) | 1:128.12.0+build1-0ubuntu0.22.04.1 | [xul-ext-lightning 1:128.12.0+build1-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-xul-ext-lightning-1-128.12.0-build1-0ubuntu0.22.04.1.md) | Jun 24, 2025 |

---

Data as of 2026-11-08T06:59:42Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.