Out-of-bounds read in OpenEXR - CVE-2026-59189
Published: August 8, 2026
Vulnerability identifier: #VU141359
CSH Severity: Medium
CVSS v4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-59189
CWE-ID: CWE-125
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 out-of-bounds read in TypedDeepImageChannel<T>::row(row) in OpenEXRUtil when parsing a crafted deep EXR file with a non-zero dataWindow origin. A remote attacker can trick the victim into opening a crafted file to cause a denial of service.
The issue can also lead to potential information disclosure when surrounding heap layout makes the out-of-bounds pointer array entry application-observable.
Affected software
OpenEXR
How to mitigate CVE-2026-59189
Install security update from vendor's website.
OpenEXR - addressed in versions 3.2.11, 3.3.13, 3.4.14