#VU125326 Use of uninitialized resource in OpenEXR - CVE-2026-34543
Published: April 8, 2026
Vulnerability identifier: #VU125326
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-34543
CWE-ID: CWE-908
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
OpenEXR
OpenEXR
Software vendor:
OpenEXR
OpenEXR
Description
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to use of uninitialized resource in undo_pxr24_impl and exr_uncompress_buffer when parsing a crafted PXR24 EXR file with a truncated zlib stream. A remote attacker can supply a specially crafted EXR file to disclose sensitive information.
The issue is triggered during decoding under default settings.
Remediation
Install security update from vendor's website.