CVE-2026-27221

Acrobat Reader | Improper Certificate Validation (CWE-295)

State: Published
Severity: 5.5 Medium
Published: Mar 10, 2026
Updated: Aug 27, 2026
Reserved: Feb 18, 2026

Description

Acrobat Reader versions 24.001.30307, 24.001.30308, 25.001.21265 and earlier are affected by an Improper Certificate Validation vulnerability that could result in a Security feature bypass. An attacker could leverage this vulnerability to spoof the identity of a signer. Exploitation of this issue requires user interaction.

Scores

CVSS	Score	Vector	Source
3.1	5.5 Medium	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N	adobe

Weaknesses

CWE-295 Improper Certificate Validation (CWE-295)

Affected Products

Product	Versions
Acrobat DCAdobe	25.001.21265 and earlierAffected 25.001.21288Not affected
Acrobat Reader DCAdobe	25.001.21265 and earlierAffected 25.001.21288Not affected
Acrobat 2024Adobe	24.001.30307 (Win), 24.001.30308 (Mac) and earlierAffected 24.001.30356Not affected

References

https://helpx.adobe.com/security/products/acrobat/apsb26-26.htmlvendor-advisory

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