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Vulnerability record · CVE-2021-42721 · published 16 November 2021

CVE-2021-42721: Adobe media encoder use after free vulnerability

Adobe · Media Encoder

Acrobat Bridge versions 11.1.1 and earlier are affected by a use-after-free vulnerability in the processing of Format event actions that could result in 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 3.1 High EPSS 3.7% · top 10.7% CWE-416 · Use after free
7.8CVSS 3.1 base score, v2 9.3
3.7%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

Acrobat Bridge versions 11.1.1 and earlier are affected by a use-after-free vulnerability in the processing of Format event actions that could result in 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:3.1/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/bridge/apsb21-94.html Vendor Advisory
https://helpx.adobe.com/security/products/bridge/apsb21-94.html Vendor Advisory

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Related vulnerabilities

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

9.8CVE-2019-8246Adobe media encoder out-of-bounds write vulnerabilityAdobe Media Encoder versions 13.1 and earlier have an out-of-bounds write vulnerability. Successful exploitation could lead to arbitrary code executi…EPSS 4.6%8.8CVE-2019-7842Adobe media encoder use after free vulnerabilityAdobe Media Encoder version 13.0.2 has a use-after-free vulnerability. Successful exploitation could lead to remote code execution.EPSS 8.7%7.8CVE-2026-48370Adobe media encoder out-of-bounds write vulnerabilityMedia Encoder is affected by an out-of-bounds write vulnerability that could result in arbitrary code execution in the context of the current user. E…EPSS 0.26%7.8CVE-2026-48366Adobe media encoder out-of-bounds write vulnerabilityMedia Encoder is affected by an out-of-bounds write vulnerability that could result in arbitrary code execution in the context of the current user. E…EPSS 0.26%7.8CVE-2026-47976Adobe media encoder out-of-bounds write vulnerabilityMedia Encoder is affected by an out-of-bounds write vulnerability that could result in arbitrary code execution in the context of the current user. E…EPSS 0.26%7.8CVE-2026-47971Adobe media encoder stack-based buffer overflow vulnerabilityMedia Encoder is affected by a Stack-based Buffer Overflow vulnerability that could result in arbitrary code execution in the context of the current …EPSS 0.34%7.8CVE-2026-34640Adobe media encoder integer overflow vulnerabilityMedia Encoder versions 26.0.2, 25.6.4 and earlier are affected by an Integer Overflow or Wraparound vulnerability that could result in arbitrary code…EPSS 0.31%7.8CVE-2026-34639Adobe media encoder out-of-bounds write vulnerabilityMedia Encoder versions 26.0.2, 25.6.4 and earlier are affected by an out-of-bounds write vulnerability that could result in arbitrary code execution …EPSS 0.26%

Source: NIST National Vulnerability Database (record CVE-2021-42721), CISA KEV, FIRST EPSS (scores of 2026-10-05). This page is refreshed as NVD updates the record.