CVE-2025-2866

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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
5.5 MEDIUM
LOCAL
LOW
NONE
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Document Fdn.CNA
---
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CISA-ADPADP
---
---
Base Score
CVSS 3.x
EPSS Score
Percentile: 2%
VendorProductVersion
libreofficelibreoffice
24.8.0.1 ≤
𝑥
< 24.8.6.0
libreofficelibreoffice
25.2.0.1 ≤
𝑥
< 25.2.2
libreofficelibreoffice
24.8.0.0:alpha1
libreofficelibreoffice
24.8.0.0:beta1
libreofficelibreoffice
25.2.0.0:alpha1
libreofficelibreoffice
25.2.0.0:beta1
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
libreoffice
bullseye
vulnerable
bullseye (security)
1:7.0.4-4+deb11u13
fixed
bookworm
4:7.4.7-1+deb12u8
fixed
bookworm (security)
4:7.4.7-1+deb12u8
fixed
trixie
4:25.2.3-2
fixed
sid
4:25.2.3-2
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
libreoffice
plucky
not-affected
oracular
Fixed 4:24.8.6-0ubuntu0.24.10.2
released
noble
Fixed 4:24.2.7-0ubuntu0.24.04.4
released
jammy
Fixed 1:7.3.7-0ubuntu0.22.04.10
released
focal
Fixed 1:6.4.7-0ubuntu0.20.04.15
released
Common Weakness Enumeration
References
https://www.libreoffice.org/about-us/security/advisories/cve-2025-2866