Out-of-bounds write in Adobe Media Encoder - CVE-2026-34639

 

Out-of-bounds write in Adobe Media Encoder - CVE-2026-34639

Published: May 25, 2026


Vulnerability identifier: #VU132238
CSH Severity: High
CVSS v4: 8.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-34639
CWE-ID: CWE-787
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to execute arbitrary code.

The vulnerability exists due to out-of-bounds write in Adobe Media Encoder when processing crafted content. A remote attacker can trick the victim into opening crafted content to execute arbitrary code.

User interaction is required to open crafted content.


Affected software

Adobe Media Encoder

How to mitigate CVE-2026-34639

Install security update from vendor's website.

Adobe Media Encoder - addressed in versions 24.6.5, 26.2

External References

Related Security Bulletins