CVE-2025-2866
Published:April 27, 2025
Updated:August 06, 2026
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.
Affected Packages
https://github.com/LibreOffice/core.git (GITHUB):
Affected version(s) >=libreoffice-3.2.99.2 <libreoffice-24.8.6.2Fix Suggestion:
Update to version libreoffice-24.8.6.2https://github.com/LibreOffice/core.git (GITHUB):
Affected version(s) >=libreoffice-25-2-branch-point <libreoffice-25.2.1.2Fix Suggestion:
Update to version libreoffice-25.2.1.2Additional Notes
The description of this vulnerability differs from MITRE.
Related Resources (2)
Do you need more information?
Contact UsCVSS v4
Base Score:
2.4
Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
PASSIVE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
LOW
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
3.2
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Weakness Type (CWE)
Improper Verification of Cryptographic Signature
EPSS
Base Score:
0.11