CVE-2026-21321 — HIGH (7.8)

Q: How severe is CVE-2026-21321?

CVE-2026-21321 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-21321?

Check the references section above for vendor advisories and patch information. Affected products include: Adobe After Effects, Apple Macos, Microsoft Windows.

Vulnerability Description

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.

CVSS Score

7.8

HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Adobe	After Effects	< 25.6.4
Apple	Macos	-
Microsoft	Windows	-

Related Weaknesses (CWE)

CWE-190

References

https://helpx.adobe.com/security/products/after_effects/apsb26-15.htmlVendor Advisory

FAQ

What is CVE-2026-21321?

CVE-2026-21321 is a vulnerability with a CVSS score of 7.8 (HIGH). 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 o...

How severe is CVE-2026-21321?

CVE-2026-21321 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-21321?

Check the references section above for vendor advisories and patch information. Affected products include: Adobe After Effects, Apple Macos, Microsoft Windows.