Integer overflow in OpenEXR - CVE-2026-44663
Published: May 25, 2026
Vulnerability identifier: #VU132248
CSH Severity: Medium
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-44663
CWE-ID: CWE-190
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service and modify data integrity.
The vulnerability exists due to integer overflow leading to a heap-based buffer overflow in ht_undo_impl() in src/lib/OpenEXRCore/internal_ht.cpp when decoding a crafted HTJ2K-compressed EXR file. A remote attacker can trick the victim into opening a crafted file to cause a denial of service and modify data integrity.
User interaction is required to open a crafted file.
Affected software
OpenEXR
Anolis OS
OpenEXR
OpenEXR-devel
OpenEXR-libs
OpenEXR-doc
Anolis OS
OpenEXR
OpenEXR-devel
OpenEXR-libs
OpenEXR-doc
How to mitigate CVE-2026-44663
Install security update from vendor's website.
OpenEXR - update to 3.4.12
OpenEXR - update to 3.4.11-2
OpenEXR-devel - update to 3.4.11-2
OpenEXR-libs - update to 3.4.11-2
OpenEXR-doc - update to 3.4.11-2
OpenEXR - update to 3.4.11-2
OpenEXR-devel - update to 3.4.11-2
OpenEXR-libs - update to 3.4.11-2
OpenEXR-doc - update to 3.4.11-2