CVE-2026-34545
Description
OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From version 3.4.0 to before version 3.4.7, an attacker providing a crafted .exr file with HTJ2K compression and a channel width of 32768 can write controlled data beyond the output heap buffer in any application that decodes EXR images. The write primitive is 2 bytes per overflow iteration or 4 bytes (by another path), repeating for each additional pixel past the overflow point. In this context, a heap write overflow can lead to remote code execution on systems. This issue has been patched in version 3.4.7.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
19- Range: 3.4.0 to <3.4.7
- osv-coords17 versionspkg:apk/chainguard/openexrpkg:apk/chainguard/openexr-devpkg:apk/chainguard/openexr-docpkg:apk/chainguard/openexr-libiexpkg:apk/chainguard/openexr-libilmthreadpkg:apk/chainguard/openexr-libopenexrpkg:apk/chainguard/openexr-libopenexrcorepkg:apk/chainguard/openexr-libopenexrutilpkg:apk/wolfi/openexrpkg:apk/wolfi/openexr-devpkg:apk/wolfi/openexr-docpkg:apk/wolfi/openexr-libiexpkg:apk/wolfi/openexr-libilmthreadpkg:apk/wolfi/openexr-libopenexrpkg:apk/wolfi/openexr-libopenexrcorepkg:apk/wolfi/openexr-libopenexrutilpkg:rpm/opensuse/openexr&distro=openSUSE%20Tumbleweed
< 3.4.9-r0+ 16 more
- (no CPE)range: < 3.4.9-r0
- (no CPE)range: < 3.4.9-r0
- (no CPE)range: < 3.4.9-r0
- (no CPE)range: < 3.4.9-r0
- (no CPE)range: < 3.4.9-r0
- (no CPE)range: < 3.4.9-r0
- (no CPE)range: < 3.4.9-r0
- (no CPE)range: < 3.4.9-r0
- (no CPE)range: < 3.4.9-r0
- (no CPE)range: < 3.4.9-r0
- (no CPE)range: < 3.4.9-r0
- (no CPE)range: < 3.4.9-r0
- (no CPE)range: < 3.4.9-r0
- (no CPE)range: < 3.4.9-r0
- (no CPE)range: < 3.4.9-r0
- (no CPE)range: < 3.4.9-r0
- (no CPE)range: < 3.4.9-1.1
Patches
Vulnerability mechanics
References
6- github.com/AcademySoftwareFoundation/openexr/commit/3827998f5c041d6a94c6af24bbb363daa669e4b3nvdPatch
- github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-ghfj-fx47-wg97nvdExploitVendor Advisory
- github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.4.7nvdProductRelease Notes
- access.redhat.com/security/cve/CVE-2026-34545nvd
- bugzilla.redhat.com/show_bug.cginvd
- security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34545.jsonnvd
News mentions
0No linked articles in our index yet.