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CVE-2025-2866

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Date: April 27, 2025

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.

Severity Score

Related Resources (3)

https://www.libreoffice.org/about-us/security/advisories/cve-2025-2866
https://nvd.nist.gov/vuln/detail/CVE-2025-2866
https://www.mend.io/vulnerability-database/CVE-2025-2866

Severity Score

Weakness Type (CWE)

Improper Verification of Cryptographic Signature

CWE-347

Top Fix

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Upgrade Version

Upgrade to version https://github.com/LibreOffice/core.git - libreoffice-24.8.6.2;https://github.com/LibreOffice/core.git - libreoffice-25.2.1.2

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CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): HIGH
Availability (A): NONE

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