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Vulnerability record · CVE-2021-21077 · published 12 March 2021

CVE-2021-21077: Adobe animate heap-based buffer overflow vulnerability

Adobe · Animate

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.

7.8 CVSS 3.0 High EPSS 7.5% · top 5.7% CWE-122 · Heap-based buffer overflowCWE-787 · Out-of-bounds write
7.8CVSS 3.0 base score, v2 6.8
7.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

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.

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://helpx.adobe.com/security/products/animate/apsb21-21.html PatchVendor Advisory
https://helpx.adobe.com/security/products/animate/apsb21-21.html PatchVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2016-7866Adobe animate memory buffer overflow vulnerabilityAdobe Animate versions 15.2.1.95 and earlier have an exploitable memory corruption vulnerability. Successful exploitation could lead to arbitrary cod…EPSS 16%8.6CVE-2026-48350Adobe animate path traversal vulnerabilityAnimate is affected by an Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability that could result in arbitrary…EPSS 0.33%8.2CVE-2026-76191Adobe animate code injection vulnerabilityAnimate is affected by an Improper Control of Generation of Code ('Code Injection') vulnerability that could result in arbitrary code execution in th…EPSS 0.33%8.2CVE-2026-48345Adobe animate os command injection vulnerabilityAnimate is affected by an Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability that could result …EPSS 0.89%8.1CVE-2026-48349Adobe animate incorrect authorization vulnerabilityAnimate is affected by an Incorrect Authorization vulnerability that could result in arbitrary code execution in the context of the current user. Exp…EPSS 0.24%7.9CVE-2026-48346Adobe animate untrusted search path vulnerabilityAnimate is affected by an Untrusted Search Path vulnerability that could result in arbitrary code execution in the context of the current user. Explo…EPSS 0.26%7.8CVE-2025-54279Adobe animate use after free vulnerabilityAnimate versions 23.0.13, 24.0.10 and earlier are affected by a Use After Free vulnerability that could result in arbitrary code execution in the con…EPSS 0.25%7.8CVE-2025-61804Adobe animate heap-based buffer overflow vulnerabilityAnimate versions 23.0.13, 24.0.10 and earlier are affected by a Heap-based Buffer Overflow vulnerability that could result in arbitrary code executio…EPSS 0.27%

Source: NIST National Vulnerability Database (record CVE-2021-21077), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.