CVE-2025-2866

PDF signature forgery with adbe.pkcs7.sha1 SubFilter

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.

Category

2.4
CVSS
Severity: Low
CVSS 4.0 •
CVSS 3.1 •
EPSS 0.02%
Vendor Advisory libreoffice.org
Affected: The Document Foundation LibreOffice
Published at:
Updated at:

References

Link Tags
https://www.libreoffice.org/about-us/security/advisories/cve-2025-2866 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2025-2866?
CVE-2025-2866 has been scored as a low severity vulnerability.
How to fix CVE-2025-2866?
To fix CVE-2025-2866, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-2866 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-2866 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-2866?
CVE-2025-2866 affects The Document Foundation LibreOffice.
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