Arbitrary code execution via malicious file heap overflow
Published Mar 12, 2021 · Updated Apr 23, 2025
Heap-based buffer overflow in Adobe Animate 21.0.3 and earlier allows remote attackers to execute arbitrary code via a malicious file opened by a victim. Adobe has not published the specific parser component or faulty operation; the flaw occurs while Animate processes attacker-controlled file data. Exploitation requires a victim to open the file, and code executes with that user's privileges.
Summary
What happened
Heap-based buffer overflow in Adobe Animate 21.0.3 and earlier allows remote attackers to execute arbitrary code via a malicious file opened by a victim. Adobe has not published the specific parser component or faulty operation; the flaw occurs while Animate processes attacker-controlled file data. Exploitation requires a victim to open the file, and code executes with that user's privileges.
The record
- CVE
- CVE-2021-21077
- Published
- Mar 12, 2021
- Updated
- Apr 23, 2025
- Vendor
- Adobe
- Product
- Adobe Animate
- Classifications
- CWE-122, CWE-787, T1203
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Mar 12, 2021CVE publishedPublication date reported by the CVE source.
- Apr 23, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=unspecified <=21.0.3
- Affected versionversion=unspecified <=None
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
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