CVE-2026-81979: Out-of-bounds Write (CWE-787) in Adobe Adobe Acrobat

CVE-2026-81979 is an out-of-bounds write vulnerability (CWE-787) in Adobe Acrobat Reader. Successful exploitation allows an attacker to execute arbitrary code with the privileges of the current user. The attack vector requires local access with user interaction, specifically opening a malicious file. The vulnerability affects Adobe Acrobat versions up to and including 26.002.21900 and 24.001.30383. No known exploits are reported in the wild at this time.

Exploitation of this vulnerability could allow an attacker to execute arbitrary code in the context of the current user, potentially leading to full compromise of the user's environment. The attack requires the victim to open a malicious file, so social engineering or other delivery mechanisms are necessary.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should avoid opening files from untrusted sources and apply any recommended security best practices from Adobe.