CVE-2026-34589
Severity CVSS v4.0:
HIGH
Type:
CWE-190
Integer Overflow or Wraparound
Publication date:
06/04/2026
Last modified:
06/04/2026
Description
OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From 3.2.0 to before 3.2.7, 3.3.9, and 3.4.9, the DWA lossy decoder constructs temporary per-component block pointers using signed 32-bit arithmetic. For a large enough width, the calculation overflows and later decoder stores operate on a wrapped pointer outside the allocated rowBlock backing store. This vulnerability is fixed in 3.2.7, 3.3.9, and 3.4.9.
Impact
Base Score 4.0
8.40
Severity 4.0
HIGH