CVE-2026-34543
Last modified
CVE-2026-34543 is a high-severity vulnerability rated 7.5/10 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, sensitive information from heap memory may be leaked through the decoded pixel data (information disclosure). EPSS estimates a 0.48% 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, sensitive information from heap memory may be leaked through the decoded pixel data (information disclosure). This occurs under default settings; simply reading a malicious EXR file is sufficient to trigger the issue, without any user interaction. This issue has been patched in version 3.4.8.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/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-vc68-257w-m432Exploit, Vendor Advisory
- https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-vc68-257w-m432Exploit, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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