CVE-2025-2866
libreoffice - security update
5.5
MEDIUM
CVSS 3.1
EPSS 0.09%
Description
Improper Verification of Cryptographic Signature vulnerability in LibreOffice allows PDF Signature Spoofing by Improper Validation. In the affected versions of LibreOffice a flaw in the verification code for adbe.pkcs7.sha1 signatures could cause invalid signatures to be accepted as valid This issue affects LibreOffice: from 24.8 before < 24.8.6, from 25.2 before < 25.2.2.
How to fix CVE-2025-2866
To remediate CVE-2025-2866, upgrade the affected package to a fixed version below.
- —upgrade to 1:7.0.4-4+deb11u13 or later
- —upgrade to 4:7.4.7-1+deb12u8 or later
Is CVE-2025-2866 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 1:7.0.4-4+deb11u13
- from 0, < 4:7.4.7-1+deb12u8
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.5 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N |