CVE-2026-81977

Acrobat Reader | Integer Underflow (Wrap or Wraparound) (CWE-191)

State: Published
Severity: 5.5 Medium
Published: Sep 8, 2026
Updated: Sep 11, 2026
Reserved: Aug 27, 2026

Description

Acrobat Reader is affected by an Integer Underflow (Wrap or Wraparound) vulnerability that could lead to disclosure of sensitive memory. An attacker could leverage this vulnerability to disclose sensitive information. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

Scores

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

Weaknesses

CWE-191 Integer Underflow (Wrap or Wraparound) (CWE-191)

Affected Products

Product	Versions
Adobe AcrobatAdobe	26.002.21900 and earlierAffected 26.002.21901Not affected
Acrobat ReaderAdobe	26.002.21900 and earlierAffected 26.002.21901Not affected
Acrobat 2024Adobe	24.001.30383 and earlierAffected 24.001.30429Not affected

References

https://helpx.adobe.com/security/products/acrobat/apsb26-141.htmlvendor-advisory

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