# CVE-2025-3877: thunderbird: Rejected reason: This CVE was marked as fixed, but due to other code landing - was not actually fixed

CVE-2025-3877 is fixed in 2 products on 1 platform, first by CVE-2025-3877, released May 14, 2025. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2025-3877
- Priority: High
- CVSS: 8.8 (Important)
- EPSS: n/a
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 14, 2025

## Description

Rejected reason: This CVE was marked as fixed, but due to other code landing - was not actually fixed.  It was subsequently fixed in CVE-2025-5986.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| 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 11.6 (bullseye) | 1:128.10.1esr-1~deb11u1 | [CVE-2025-3877](https://patchblox.com/security/data/fix/linux/cve-2025-3877.md) | May 14, 2025 |
| Linux | thunderbird Debian 12.15 (bookworm) | 1:128.10.1esr-1~deb12u1 | [CVE-2025-3877](https://patchblox.com/security/data/fix/linux/cve-2025-3877.md) | May 14, 2025 |
| Linux | thunderbird Debian 13.5 (trixie) | 1:128.10.1esr-1 | [CVE-2025-3877](https://patchblox.com/security/data/fix/linux/cve-2025-3877.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 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 |

---

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.