Improper Certificate Validation in LibreOffice Products
CVE-2021-25635

5.2MEDIUM

Key Information:

Vendor
CVE Published:
21 March 2025

What is CVE-2021-25635?

An improper certificate validation issue exists in LibreOffice, where an attacker can exploit this vulnerability by crafting a self-signed ODF document. This manipulated document uses a signature algorithm that is either invalid or unknown to LibreOffice, leading the software to incorrectly present such a signature as valid. This flaw can mislead users into trusting unverified documents, posing a significant security risk.

Affected Version(s)

LibreOffice 7.0 < 7.0.5

LibreOffice 7.1 < 7.1.1

References

CVSS V4

Score:
5.2
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
None
Attack Vector:
Local
Attack Complexity:
High
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

NDS of Ruhr University Bochum
.