Out-of-bounds write in OpenEXR - CVE-2026-59984
Published: August 8, 2026
Vulnerability identifier: #VU141355
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-2026-59984
CWE-ID: CWE-787
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 write in the B44 scanline decode path reached through the public C++ Imf::InputFile::readPixels() API when parsing a crafted B44-compressed scanline EXR file on 32-bit ILP32 builds. A remote attacker can trick the victim into opening a crafted file to cause a denial of service.
Only 32-bit ILP32 builds are affected, and user interaction is required to open the crafted EXR file.
Affected software
OpenEXR
How to mitigate CVE-2026-59984
Install security update from vendor's website.
OpenEXR - addressed in versions 3.2.11, 3.3.13, 3.4.14