What is CVE-2026-21328?

CVE-2026-21328 is a high-severity vulnerability in Adobe After Effects, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2026-02-10.

How severe is CVE-2026-21328?

High severity. CVSS v3 base score is 7.8 out of 10.

Buffer overflow in Adobe After Effects

CVE-2026-21328

After Effects versions 25.6 and earlier are affected by an out-of-bounds write 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 v…

Vulnerability class: Buffer Overflow

EPSS: 0.000 (2.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Adobe After Effects — versions 0

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

helpx.adobe.com/security/products/after_effects/apsb26-15.html (vendor-advisory)

Frequently asked questions

What is CVE-2026-21328?: CVE-2026-21328 is a high-severity vulnerability in Adobe After Effects, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2026-02-10.
How severe is CVE-2026-21328?: High severity. CVSS v3 base score is 7.8 out of 10.