#VU125328 Heap-based buffer overflow in OpenEXR - CVE-2026-34545

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Main Vulnerability Database Vulnerabilities #VU125328

#VU125328 Heap-based buffer overflow in OpenEXR - CVE-2026-34545

Published: April 8, 2026


Vulnerability identifier: #VU125328
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2026-34545
CWE-ID: CWE-122
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
OpenEXR
Software vendor:
OpenEXR

Description

The vulnerability allows a remote attacker to execute arbitrary code.

The vulnerability exists due to heap-based buffer overflow in the HTJ2K decoder in internal_ht.cpp when parsing a crafted EXR file with HTJ2K compression. A remote attacker can supply a specially crafted EXR file to execute arbitrary code.

User interaction is required to open or otherwise process the crafted file.


Remediation

Install security update from vendor's website.

External links