Use of Uninitialized Variable in OpenEXR - #VU141325
Published: August 8, 2026
Vulnerability identifier: #VU141325
CSH Severity: Low
CVSS v4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-457
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to use of uninitialized variable in unpack_sample_table() when parsing a crafted compressed deep-scanline EXR file with a zero-length sample-count table. A remote attacker can trick the victim into opening a crafted file to cause a denial of service.
The issue is triggered through the normal OpenEXR C and C++ decode or check paths, and user interaction is required to open the crafted file.
Affected software
OpenEXR
Remediation
Install security update from vendor's website.
OpenEXR - addressed in versions 3.2.11, 3.3.13, 3.4.14