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CVE-2021-25635

Date: March 21, 2025

A flaw was found in LibreOffice, where it improperly validated signatures for algorithms that were not verified. This flaw leads to LibreOffice presenting a valid signature when the validity of the signature was not verified. The highest threat from this vulnerability is to confidentiality and integrity.

Language: C++

Severity Score

Related Resources (6)

https://github.com/LibreOffice/core/commit/a5fe0bea138c5b32268a5cd0093908909d8bc013
https://www.libreoffice.org/about-us/security/advisories/cve-2021-25635/
https://nvd.nist.gov/vuln/detail/CVE-2021-25635
https://people.canonical.com/~ubuntu-security/cve/CVE-2021-25635
https://access.redhat.com/security/cve/CVE-2021-25635
https://www.mend.io/vulnerability-database/CVE-2021-25635

Severity Score

Weakness Type (CWE)

Improper Certificate Validation

CWE-295

CVSS v3.1

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

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