Integer overflow in OpenEXR - CVE-2026-59183
Published: August 8, 2026
Vulnerability identifier: #VU141363
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-2026-59183
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.
The vulnerability exists due to integer overflow in unpack_sample_table() in src/lib/OpenEXRCore/decoding.c when parsing a crafted deep tiled EXR file. A remote attacker can trick the victim into opening a crafted file to cause a denial of service.
User interaction is required to open a crafted file. Exploitation requires processing deep tiled EXR content through the OpenEXRCore decoding path.
Affected software
OpenEXR
Fedora
mingw-openexr
Fedora
mingw-openexr
How to mitigate CVE-2026-59183
Install security update from vendor's website.
OpenEXR - addressed in versions 3.2.11, 3.3.13, 3.4.14
mingw-openexr - addressed in versions 3.3.14-1.fc43, 3.4.15-1.fc44, 3.4.15-1.fc45
mingw-openexr - addressed in versions 3.3.14-1.fc43, 3.4.15-1.fc44, 3.4.15-1.fc45