CVEvulnerability

CVE-2026-34378

6.5 MEDIUM Published 2026-04-06 Modified 2026-10-26 Official page ↗
Status
Analyzed
Published
2026-04-06
Last modified
2026-10-26
Assigner
[email protected]
CVSS 3.1 ([email protected])
6.5 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weaknesses
CWE-190

Description

OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From 3.4.0 to before 3.4.9, a missing bounds check on the dataWindow attribute in EXR file headers allows an attacker to trigger a signed integer overflow in generic_unpack(). By setting dataWindow.min.x to a large negative value, OpenEXRCore computes an enormous image width, which is later used in a signed integer multiplication that overflows, causing the process to terminate with SIGILL via UBSan. This vulnerability is fixed in 3.4.9.

Affected configurations

• openexr openexr (>= 3.4.0 < 3.4.9)

Related

Weakness · CWE (1)

  • CWE-190 Integer Overflow or Wraparound weakness

References