Integer overflow in Adobe After Effects - CVE-2026-21321
Published: February 10, 2026
Vulnerability identifier: #VU122632
CSH Severity: High
CVSS v4: 8.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-21321
CWE-ID: CWE-190
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to integer overflow. A remote attacker can trick the victim into opening a specially crafted file, trigger an integer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
Adobe After Effects
How to mitigate CVE-2026-21321
Install updates from vendor's website.
Adobe After Effects - addressed in versions 25.6.4, 26.0