CVE-2021-25635
libreoffice: Content Manipulation with Certificate Validation Attack
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · October 11, 2021
Updated · December 11, 2025
Description
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.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 6.3CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
CWE-295 · Improper Certificate Validation