Reachable assertion in OpenEXR - CVE-2026-53532
Published: June 23, 2026
Vulnerability identifier: #VU135037
CSH Severity: Medium
CVSS v4.0: 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/E:U/U:Green
CVE-ID: CVE-2026-53532
CWE-ID: CWE-617
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: OpenEXR
Affected software:
OpenEXR
OpenEXR
Detailed vulnerability description
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to reachable assertion in param_qcd::get_irrev_delta() in the vendored OpenJPH library when parsing a crafted HTJ2K-compressed EXR file. A remote attacker can trick the victim into opening a crafted file to cause a denial of service.
The issue is triggered by a QCD marker with Sqcd & 0x1F equal to 0, causing an unconditional process abort that cannot be caught by try/catch.
How to mitigate CVE-2026-53532
Install security update from vendor's website.