Product:
After Effects
Summary
After Effects versions 25.6 and earlier are affected by an Integer Overflow or Wraparound vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
Details
| Severity | Base Score | CVE |
|---|---|---|
| HIGH | 7.8 | CVE-2026-21321 |
Exploitation
To exploit this vulnerability, an attacker must craft a malicious file that, when opened by the victim using After Effects, triggers the integer overflow or wraparound condition. This requires the victim to be tricked into opening the file, leading to arbitrary code execution with the privileges of the current user.
Affected Products
- After Effects versions 25.6 and earlier: Vulnerable to integer overflow or wraparound issues that can lead to arbitrary code execution.
Mitigation
Users are advised to update to the latest version of After Effects to mitigate this vulnerability. Additionally, avoid opening files from untrusted sources to reduce the risk of exploitation.