VULNERABILITY INTELLIGENCE
CVE-2026-34589
CVSS score5 MEDIUM
EPSS probability0.42%
CISA KEVNot currently listed
Published2026-04-06
Last modified2026-10-26
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H
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.
Weakness classification
- security-advisories@github.com: CWE-190
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c: CWE-190
Primary references
- security-advisories@github.com — Product, Release Notes
- security-advisories@github.com — Product, Release Notes
- security-advisories@github.com — Product, Release Notes
- security-advisories@github.com — Exploit, Vendor Advisory
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c