After Effects CVE-2026-21321
HIGHCVSS VectorNVD
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Lifecycle Timeline
2DescriptionNVD
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.
AnalysisAI
Arbitrary code execution in Adobe After Effects 25.6 and earlier through an integer overflow vulnerability affecting file processing. An attacker can exploit this by crafting a malicious file that, when opened by a user, executes code with the privileges of the current user. …
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RemediationAI
Within 24 hours: Inventory all After Effects installations and restrict file sharing from untrusted sources; issue user awareness communication prohibiting opening unsolicited .aep files. Within 7 days: Implement application whitelisting and disable After Effects where not business-critical; isolate production systems from general network access. …
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External POC / Exploit Code
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