CVE-2026-81977: Acrobat Reader | Integer Underflow (Wrap or Wraparound) (CWE-191)
Published Sep 8, 2026
·Updated
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.
Affected Software
1 affected component
Acrobat Reader
Event History
Sep 8, 2026
CVE Published
via MITRE·08:31 PM
Data Sourced
via MITRE·08:31 PM
DescriptionSeverityWeakness
Frequently Asked Questions
1
What must an attacker do to exploit this issue?
The attacker must provide a malicious file and persuade a victim to open it in Acrobat Reader. The vulnerability has local attack vector, requires low attack complexity, and does not require privileges.
2
What is the likely impact if exploitation succeeds?
Successful exploitation could disclose sensitive information from memory. The provided impact assessment indicates high confidentiality impact, with no integrity or availability impact.