CVE-2026-81977

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.

Scoring

Severity

MEDIUM

CVSS base score

5.5

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

CWE

CWE-191

Published

2026-09-08

Last modified

2026-09-08

Affected products

• Adobe Adobe Acrobat
• Adobe Adobe Acrobat
• Adobe Acrobat Reader
• Adobe Acrobat Reader
• Adobe Acrobat 2024
• Adobe Acrobat 2024

Weakness type

• CWE-191

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