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.
Published: 2025-04-27
Score: 2.4 Low
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-4205-1 libreoffice security update
Debian DSA Debian DSA DSA-5908-1 libreoffice security update
EUVD EUVD EUVD-2025-12434 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.
Ubuntu USN Ubuntu USN USN-7504-1 LibreOffice vulnerability
History

Mon, 03 Nov 2025 20:30:00 +0000

Type Values Removed Values Added
References

Thu, 03 Jul 2025 21:45:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

 cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N'}

Mon, 12 May 2025 19:30:00 +0000

Type Values Removed Values Added
First Time appeared Libreoffice
Libreoffice libreoffice
CPEs cpe:2.3:a:libreoffice:libreoffice:*:*:*:*:*:*:*:*
cpe:2.3:a:libreoffice:libreoffice:24.8.0.0:alpha1:*:*:*:*:*:*
cpe:2.3:a:libreoffice:libreoffice:24.8.0.0:beta1:*:*:*:*:*:*
cpe:2.3:a:libreoffice:libreoffice:25.2.0.0:alpha1:*:*:*:*:*:*
cpe:2.3:a:libreoffice:libreoffice:25.2.0.0:beta1:*:*:*:*:*:*
Vendors & Products Libreoffice
Libreoffice libreoffice
Metrics cvssV3_1

{'score': 2.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N'}

 cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

Mon, 28 Apr 2025 14:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 2.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

threat_severity

Low

Sun, 27 Apr 2025 19:15:00 +0000

Type Values Removed Values Added
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.
Title PDF signature forgery with adbe.pkcs7.sha1 SubFilter
Weaknesses CWE-347
References
Metrics cvssV4_0

{'score': 2.4, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N'}

Subscriptions

Libreoffice Libreoffice
cve-icon MITRE

Status: PUBLISHED

Assigner: Document Fdn.

Published:

Updated: 2025-11-03T19:46:42.576Z

Reserved: 2025-03-27T11:22:16.241Z

Link: CVE-2025-2866

cve-icon Vulnrichment

Updated: 2025-11-03T19:46:42.576Z

cve-icon NVD

Status : Modified

Published: 2025-04-27T19:15:15.137

Modified: 2025-11-03T20:18:09.580

Link: CVE-2025-2866

cve-icon Redhat

Severity : Low

Publid Date: 2025-04-27T19:04:52Z

Links: CVE-2025-2866 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses