CVE-2026-34544
Last modified
CVE-2026-34544 is a high-severity vulnerability rated 8.4/10 on the CVSS scale. 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 3.4.8, a crafted B44 or B44A EXR file can cause an out-of-bounds write in any application that decodes it via exr_decoding_run(). EPSS estimates a 0.24% chance of exploitation in the next 30 days.
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 3.4.8, a crafted B44 or B44A EXR file can cause an out-of-bounds write in any application that decodes it via exr_decoding_run(). Consequences range from immediate crash (most likely) to corruption of adjacent heap allocations (layout-dependent). This issue has been patched in version 3.4.8.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Openexr | Openexr | >= 3.2.0, < 3.2.7 |
| Openexr | Openexr | >= 3.3.0, < 3.3.9 |
| Openexr | Openexr | >= 3.4.0, < 3.4.8 |
References
- https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.4.8Product, Release Notes
- https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-h762-rhv3-h25vExploit, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
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