CVE-2021-21077: adobe animate Heap-based Buffer Overflow

Vulnerability summary

CVE-2021-21077 is a high (CVSS 7.8) Heap-based Buffer Overflow vulnerability in adobe animate. EPSS estimates a 8.30% chance of exploitation in the next 30 days, higher than 94.8% of scored vulnerabilities.

Timeline

1. 12-03-2021
   PublishedVulnerability first disclosed.
2. 23-04-2025
   Last modifiedVulnerability information updated.

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.

• CWE-122Heap-based Buffer OverflowA heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
• CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.