Out-of-bounds read in Adobe Reader and Adobe Acrobat - CVE-2026-81978
Published: September 8, 2026
Vulnerability identifier: #VU147462
CSH Severity: Medium
CVSS v4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-81978
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to disclose memory contents.
The vulnerability exists due to an out-of-bounds read in Adobe Acrobat and Reader when processing a crafted file. A remote attacker can trick the victim into opening a crafted file to disclose memory contents.
Affected software
Adobe Reader
Adobe Acrobat
Adobe Acrobat
How to mitigate CVE-2026-81978
Install security update from vendor's website.
Adobe Reader - update to 26.002.21901
Adobe Acrobat - addressed in versions 24.001.30429, 26.002.21901
Adobe Acrobat - addressed in versions 24.001.30429, 26.002.21901