CVE-2025-26696
7.0
HIGH
CVSS 3.1
EPSS 0.15%
Description
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.
How to fix CVE-2025-26696
To remediate CVE-2025-26696, upgrade the affected package to a fixed version below.
- Debian/thunderbird—upgrade to 1:128.8.0esr-1~deb11u1 or later
Is CVE-2025-26696 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 1:128.8.0esr-1~deb11u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.0 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L |