CVE-2021-25635

An Improper Certificate Validation vulnerability in LibreOffice allowed an attacker to self sign an ODF document, with a signature untrusted by the target, then modify it to change the signature algorithm to an invalid (or unknown to LibreOffice) algorithm and LibreOffice would incorrectly present such a signature with an unknown algorithm as a valid signature issued by a trusted person This issue affects LibreOffice: from 7.0 before 7.0.5, from 7.1 before 7.1.1.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://www.libreoffice.org/about-us/security/advisories/cve-2021-25635/	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:libreoffice:libreoffice::::::::
	cpe:2.3:a:libreoffice:libreoffice::::::::

History

No history.

Information

Published : 2025-03-21 15:15

Updated : 2025-12-10 19:18

NVD link : CVE-2021-25635

Mitre link : CVE-2021-25635

CVE.ORG link : CVE-2021-25635

JSON object : View

Products Affected

libreoffice

libreoffice

CWE

CWE-295

Improper Certificate Validation

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