CVE-2021-21077 Adobe Animate heap-based overflow vulnerability
An attacker can achieve arbitrary code execution by tricking a user into opening a malicious file in Adobe Animate.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-21077?
CVE-2021-21077 is a high-severity memory corruption vulnerability in Adobe Animate, published on 12 Mar 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
Adobe Animate version 21.0.3 (and earlier) is affected by a Heap-based Buffer Overflow vulnerability. An unauthenticated attacker could leverage this vulnerability to achieve 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.
Which versions are affected by CVE-2021-21077?
It affects 1 product.
Products include Adobe Animate.
How do I fix CVE-2021-21077?
No fix has been published for CVE-2021-21077 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2021-21077 being exploited?
There is no known exploitation of CVE-2021-21077 in the wild and no public exploit code.
Other vulnerabilities in Adobe Animate
- CVE-2016-7866 Memory corruption in Adobe Animate 15.2.1.95 and earlier
- CVE-2026-48350 Animate | Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') (CWE-22)
- CVE-2026-76191 Animate | Improper Control of Generation of Code ('Code Injection') (CWE-94)
- CVE-2026-48345 Animate | Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') (CWE-78)
- CVE-2026-48349 Animate | Incorrect Authorization (CWE-863)
Sources
Also known as GHSA-64q7-6gwg-j7h7.