Adobe Animate FLA File Parsing Memory Corruption Arbitrary Code Execution

published 2021-11-18 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-29243

cvss: 7.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 2.5%; EPSS 2.5% chance of exploitation in 30 days, percentile 85%
public exploits: 0; none known

Adobe Animate version 21.0.9 (and earlier) is affected by a memory corruption vulnerability due to insecure handling of a malicious FLA file, potentially resulting in arbitrary code execution in the context of the current user. User interaction is required to exploit this vulnerability.

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 18 mo ago (2025-04-23)

Exploit prediction

2.55% chance of exploitation in the next 30 days, higher than 85% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD	2.0	9.3	AV:N/AC:M/Au:N/C:C/I:C/A:C

Affected products

Adobe Animate

Classification

Weakness

CWE-788 Access of Memory Location After End of Buffer
CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

helpx.adobe.com /security/products/animate/apsb21-105.html
vendor-advisory

Sources

CVE List CVE-2021-42267
NVD CVE-2021-42267

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Summary