CVE-2025-26696
Crafted email message incorrectly shown as being encrypted
CVE-2025-26696 is fixed in 138 products on 2 platforms, first by Mozilla Thunderbird (af) 136.0, released March 4, 2025. It is not reported as exploited. Patch Radar priority: High.
HighFixed on 2 platforms
CVSS
7.0
Important
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0036
29th percentile
Certain crafted MIME email messages that claimed to contain an encrypted OpenPGP message, which instead contained an OpenPGP signed message, were wrongly shown as being encrypted. This vulnerability was fixed in Thunderbird 136 and Thunderbird 128.8.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Windows apps | |||
| Mozilla Thunderbird (af) | 136.0 | Mozilla Thunderbird (af) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (ar) | 136.0 | Mozilla Thunderbird (ar) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (ast) | 136.0 | Mozilla Thunderbird (ast) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (be) | 136.0 | Mozilla Thunderbird (be) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (bg) | 136.0 | Mozilla Thunderbird (bg) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (br) | 136.0 | Mozilla Thunderbird (br) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (ca) | 136.0 | Mozilla Thunderbird (ca) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (cs) | 136.0 | Mozilla Thunderbird (cs) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (cy) | 136.0 | Mozilla Thunderbird (cy) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (da) | 136.0 | Mozilla Thunderbird (da) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (de) | 136.0 | Mozilla Thunderbird (de) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (dsb) | 136.0 | Mozilla Thunderbird (dsb) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (el) | 136.0 | Mozilla Thunderbird (el) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (en-CA) | 136.0 | Mozilla Thunderbird (en-CA) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (en-GB) | 136.0 | Mozilla Thunderbird (en-GB) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (en-US) | 136.0 | Mozilla Thunderbird (en-US) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (es-AR) | 136.0 | Mozilla Thunderbird (es-AR) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (es-ES) | 136.0 | Mozilla Thunderbird (es-ES) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (es-MX) | 136.0 | Mozilla Thunderbird (es-MX) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (et) | 136.0 | Mozilla Thunderbird (et) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (eu) | 136.0 | Mozilla Thunderbird (eu) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (fi) | 136.0 | Mozilla Thunderbird (fi) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (fr) | 136.0 | Mozilla Thunderbird (fr) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (fy-NL) | 136.0 | Mozilla Thunderbird (fy-NL) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (ga-IE) | 136.0 | Mozilla Thunderbird (ga-IE) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (gd) | 136.0 | Mozilla Thunderbird (gd) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (gl) | 136.0 | Mozilla Thunderbird (gl) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (he) | 136.0 | Mozilla Thunderbird (he) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (hr) | 136.0 | Mozilla Thunderbird (hr) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (hsb) | 136.0 | Mozilla Thunderbird (hsb) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (hu) | 136.0 | Mozilla Thunderbird (hu) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (hy-AM) | 136.0 | Mozilla Thunderbird (hy-AM) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (id) | 136.0 | Mozilla Thunderbird (id) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (is) | 136.0 | Mozilla Thunderbird (is) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (it) | 136.0 | Mozilla Thunderbird (it) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (ja) | 136.0 | Mozilla Thunderbird (ja) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (ka) | 136.0 | Mozilla Thunderbird (ka) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (kab) | 136.0 | Mozilla Thunderbird (kab) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (kk) | 136.0 | Mozilla Thunderbird (kk) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (ko) | 136.0 | Mozilla Thunderbird (ko) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (lt) | 136.0 | Mozilla Thunderbird (lt) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (lv) | 136.0 | Mozilla Thunderbird (lv) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (ms) | 136.0 | Mozilla Thunderbird (ms) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (nb-NO) | 136.0 | Mozilla Thunderbird (nb-NO) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (nl) | 136.0 | Mozilla Thunderbird (nl) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (nn-NO) | 136.0 | Mozilla Thunderbird (nn-NO) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (pa-IN) | 136.0 | Mozilla Thunderbird (pa-IN) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (pl) | 136.0 | Mozilla Thunderbird (pl) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (pt-BR) | 136.0 | Mozilla Thunderbird (pt-BR) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (pt-PT) | 136.0 | Mozilla Thunderbird (pt-PT) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (rm) | 136.0 | Mozilla Thunderbird (rm) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (ro) | 136.0 | Mozilla Thunderbird (ro) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (ru) | 136.0 | Mozilla Thunderbird (ru) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (sk) | 136.0 | Mozilla Thunderbird (sk) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (sl) | 136.0 | Mozilla Thunderbird (sl) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (sq) | 136.0 | Mozilla Thunderbird (sq) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (sr) | 136.0 | Mozilla Thunderbird (sr) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (sv-SE) | 136.0 | Mozilla Thunderbird (sv-SE) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (th) | 136.0 | Mozilla Thunderbird (th) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (tr) | 136.0 | Mozilla Thunderbird (tr) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (uk) | 136.0 | Mozilla Thunderbird (uk) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (uz) | 136.0 | Mozilla Thunderbird (uz) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (vi) | 136.0 | Mozilla Thunderbird (vi) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (zh-CN) | 136.0 | Mozilla Thunderbird (zh-CN) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird (zh-TW) | 136.0 | Mozilla Thunderbird (zh-TW) 136.0 | Mar 4, 2025 |
| Mozilla Thunderbird ESR (af) | 128.8.0 | Mozilla Thunderbird ESR (af) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (ar) | 128.8.0 | Mozilla Thunderbird ESR (ar) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (ast) | 128.8.0 | Mozilla Thunderbird ESR (ast) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (be) | 128.8.0 | Mozilla Thunderbird ESR (be) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (bg) | 128.8.0 | Mozilla Thunderbird ESR (bg) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (br) | 128.8.0 | Mozilla Thunderbird ESR (br) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (ca) | 128.8.0 | Mozilla Thunderbird ESR (ca) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (cak) | 128.8.0 | Mozilla Thunderbird ESR (cak) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (cs) | 128.8.0 | Mozilla Thunderbird ESR (cs) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (cy) | 128.8.0 | Mozilla Thunderbird ESR (cy) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (da) | 128.8.0 | Mozilla Thunderbird ESR (da) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (de) | 128.8.0 | Mozilla Thunderbird ESR (de) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (dsb) | 128.8.0 | Mozilla Thunderbird ESR (dsb) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (el) | 128.8.0 | Mozilla Thunderbird ESR (el) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (en-CA) | 128.8.0 | Mozilla Thunderbird ESR (en-CA) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (en-GB) | 128.8.0 | Mozilla Thunderbird ESR (en-GB) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (en-US) | 128.8.0 | Mozilla Thunderbird ESR (en-US) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (es-AR) | 128.8.0 | Mozilla Thunderbird ESR (es-AR) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (es-ES) | 128.8.0 | Mozilla Thunderbird ESR (es-ES) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (es-MX) | 128.8.0 | Mozilla Thunderbird ESR (es-MX) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (et) | 128.8.0 | Mozilla Thunderbird ESR (et) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (eu) | 128.8.0 | Mozilla Thunderbird ESR (eu) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (fi) | 128.8.0 | Mozilla Thunderbird ESR (fi) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (fr) | 128.8.0 | Mozilla Thunderbird ESR (fr) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (fy-NL) | 128.8.0 | Mozilla Thunderbird ESR (fy-NL) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (ga-IE) | 128.8.0 | Mozilla Thunderbird ESR (ga-IE) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (gd) | 128.8.0 | Mozilla Thunderbird ESR (gd) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (gl) | 128.8.0 | Mozilla Thunderbird ESR (gl) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (he) | 128.8.0 | Mozilla Thunderbird ESR (he) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (hr) | 128.8.0 | Mozilla Thunderbird ESR (hr) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (hsb) | 128.8.0 | Mozilla Thunderbird ESR (hsb) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (hu) | 128.8.0 | Mozilla Thunderbird ESR (hu) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (hy-AM) | 128.8.0 | Mozilla Thunderbird ESR (hy-AM) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (id) | 128.8.0 | Mozilla Thunderbird ESR (id) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (is) | 128.8.0 | Mozilla Thunderbird ESR (is) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (it) | 128.8.0 | Mozilla Thunderbird ESR (it) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (ja) | 128.8.0 | Mozilla Thunderbird ESR (ja) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (ka) | 128.8.0 | Mozilla Thunderbird ESR (ka) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (kab) | 128.8.0 | Mozilla Thunderbird ESR (kab) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (kk) | 128.8.0 | Mozilla Thunderbird ESR (kk) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (ko) | 128.8.0 | Mozilla Thunderbird ESR (ko) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (lt) | 128.8.0 | Mozilla Thunderbird ESR (lt) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (lv) | 128.8.0 | Mozilla Thunderbird ESR (lv) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (ms) | 128.8.0 | Mozilla Thunderbird ESR (ms) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (nb-NO) | 128.8.0 | Mozilla Thunderbird ESR (nb-NO) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (nl) | 128.8.0 | Mozilla Thunderbird ESR (nl) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (nn-NO) | 128.8.0 | Mozilla Thunderbird ESR (nn-NO) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (pa-IN) | 128.8.0 | Mozilla Thunderbird ESR (pa-IN) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (pl) | 128.8.0 | Mozilla Thunderbird ESR (pl) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (pt-BR) | 128.8.0 | Mozilla Thunderbird ESR (pt-BR) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (pt-PT) | 128.8.0 | Mozilla Thunderbird ESR (pt-PT) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (rm) | 128.8.0 | Mozilla Thunderbird ESR (rm) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (ro) | 128.8.0 | Mozilla Thunderbird ESR (ro) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (ru) | 128.8.0 | Mozilla Thunderbird ESR (ru) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (sk) | 128.8.0 | Mozilla Thunderbird ESR (sk) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (sl) | 128.8.0 | Mozilla Thunderbird ESR (sl) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (sq) | 128.8.0 | Mozilla Thunderbird ESR (sq) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (sr) | 128.8.0 | Mozilla Thunderbird ESR (sr) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (sv-SE) | 128.8.0 | Mozilla Thunderbird ESR (sv-SE) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (th) | 128.8.0 | Mozilla Thunderbird ESR (th) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (tr) | 128.8.0 | Mozilla Thunderbird ESR (tr) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (uk) | 128.8.0 | Mozilla Thunderbird ESR (uk) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (uz) | 128.8.0 | Mozilla Thunderbird ESR (uz) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (vi) | 128.8.0 | Mozilla Thunderbird ESR (vi) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (zh-CN) | 128.8.0 | Mozilla Thunderbird ESR (zh-CN) 128.8.0 | Mar 5, 2025 |
| Mozilla Thunderbird ESR (zh-TW) | 128.8.0 | Mozilla Thunderbird ESR (zh-TW) 128.8.0 | Mar 5, 2025 |
| Linux | |||
| MozillaThunderbird · opensuse-leap 15.6 | 128.8.0-150200.8.203.1 | SUSE-SU-2025:0849-1 | Mar 12, 2025 |
| MozillaThunderbird · sles 15.6 | 128.8.0-150200.8.203.1 | SUSE-SU-2025:0849-1 | Mar 12, 2025 |
| thunderbird · Debian 12.15 (bookworm) | 1:128.8.0esr-1~deb12u1 | DEBIAN-CVE-2025-26696 | Mar 10, 2025 |
| thunderbird · Debian 13.5 (trixie) | 1:128.8.0esr-1 | DEBIAN-CVE-2025-26696 | Mar 10, 2025 |
| thunderbird · Debian 14 | 1:128.8.0esr-1 | DEBIAN-CVE-2025-26696 | Mar 10, 2025 |
| thunderbird · RHEL 8 | 0:128.8.0-2.el8_10 | RHSA-2025:2900 | Mar 17, 2025 |
| thunderbird · RHEL 9 | 0:128.8.0-2.el9_5 | RHSA-2025:2899 | Mar 17, 2025 |
| 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 | Jun 24, 2025 |
| thunderbird · almalinux 8 | 128.8.0-2.el8_10.alma.1 | ALSA-2025:2900 | Mar 17, 2025 |
| 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 | Jun 24, 2025 |
| 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 | Jun 24, 2025 |
| 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 | Jun 24, 2025 |
| 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 | Jun 24, 2025 |
| 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 | Jun 24, 2025 |
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