Description
OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From versions 3.0.0 to before 3.2.9, 3.3.0 to before 3.3.11, and 3.4.0 to before 3.4.11, there is an integer overflow in ImageChannel::resize that leads to heap OOB write via OpenEXRUtil public API. This issue has been patched in versions 3.2.9, 3.3.11, and 3.4.11.
Affected products
openexr: openexr
References10
- github.com/AcademySoftwareFoundation/openexr/security/advisorie… ExploitVendor Advisory
- github.com/AcademySoftwareFoundation/openexr/commit/0592ee539f3… Patch
- github.com/AcademySoftwareFoundation/openexr/pull/2367 Issue TrackingPatch
- access.redhat.com/errata/RHSA-2026:38498
- access.redhat.com/errata/RHSA-2026:38499
- access.redhat.com/errata/RHSA-2026:39024
- access.redhat.com/errata/RHSA-2026:39025
- access.redhat.com/errata/RHSA-2026:39026
- access.redhat.com/errata/RHSA-2026:39027
- access.redhat.com/security/cve/CVE-2026-41142
Metrics
- CVSS 3.1
-
8.8
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 39 · as of 13 November 2026
- CWE
- CWE-190
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.