Buffer overflow in Academysoftwarefoundation Openexr
CVE-2026-34380
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, a signed integer overflow exists in undo_pxr24_i…
Vulnerability class: Integer Overflow
EPSS: 0.001 (21.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:H.
Affected products
- Academysoftwarefoundation Openexr — versions >= 3.2.0, < 3.2.7, >= 3.3.0, < 3.3.9, >= 3.4.0, < 3.4.9
Weakness classification (CWE)
References
- https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-q3v8-hw4m-59w5 (x_refsource_CONFIRM)
- https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.2.7 (x_refsource_MISC)
- https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.3.9 (x_refsource_MISC)
- https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.4.9 (x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-34380?
- CVE-2026-34380 is a medium-severity vulnerability in Academysoftwarefoundation Openexr, classified under Integer Overflow or Wraparound. CVSS score: 5.9/10. Published 2026-04-06.
- How severe is CVE-2026-34380?
- Medium severity. CVSS v3 base score is 5.9 out of 10.