CVE-2026-34589
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.
Risk Information
Base Score
5.0
MODERATE
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H
EPSS Score
Exploitation Probability
0.014
Associated Vulnerability
| Vulnerability | OS Platform |
|---|---|
| Vulnerabilities CVE-2026-34588,CVE-2026-34589 are fixed in Python-openexr 3.2.7 | Windows |
| Vulnerabilities CVE-2026-34588,CVE-2026-34589 are fixed in Python-openexr 3.3.9 | Windows |
| Vulnerabilities CVE-2026-34588,CVE-2026-34589 are fixed in Python-openexr 3.4.9 | Windows |
| Vulnerabilities CVE-2026-34588,CVE-2026-34589 are fixed in Python-openexr for linux 3.2.7 | Linux |
| Vulnerabilities CVE-2026-34588,CVE-2026-34589 are fixed in Python-openexr for linux 3.3.9 | Linux |
| Vulnerabilities CVE-2026-34588,CVE-2026-34589 are fixed in Python-openexr for linux 3.4.9 | Linux |
Patch Details
No records foundReferences
https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234