CVE-2026-42217
criticalOpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry.
Vendor / product: Openexr — openexr
OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From versions 3.0.0 to before 3.2.9, 3.3.0 to before 3.3.11, and 3.4.0 to before 3.4.11, readVariableLengthInteger() decodes a variable-length integer from untrusted EXR input without bounding the shift count. After enough continuation bytes, the code executes a left shift by 70 on a 64-bit value, which is undefined behavior. This issue has been patched in versions 3.2.9, 3.3.11, and 3.4.11.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Affected products
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
References
- https://github.com/AcademySoftwareFoundation/openexr/commit/21eaa33bcbbb0c83a5fc42f6b6d65b... security-advisories@github.com
- https://github.com/AcademySoftwareFoundation/openexr/pull/2378 security-advisories@github.com
- https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-3c67-4wwp-w5... security-advisories@github.com