# CVE-2026-54920: openexr: OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion picture...

CVE-2026-54920 is fixed in openexr on 1 platform, first by SUSE-SU-2026:22653-1, released July 14, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-54920
- Priority: Routine
- CVSS: 0.0
- EPSS: 0.0036
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jul 14, 2026

## Description

OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion picture industry. In versions 3.4.0 through 3.4.12, a reachable assertion failure in the HTJ2K decode path allows a crafted HTJ2K-compressed EXR file to cause an unconditional process abort in any application that calls exr_start_read() on untrusted input, resulting in denial of service. The crash is triggered by a QCD marker whose lower five bits are zero, which OpenEXR passes into the vendored OpenJPH library while constructing the codestream and evaluating its quantization delta parameters. OpenJPH uses an assertion rather than a recoverable error to validate those bits, so any invalid value calls abort() directly and cannot be intercepted by surrounding error handling, a problem compounded by OpenEXR wrapping only its internal HT header parser in error handling while leaving the later codestream read and construction calls unprotected. This issue has been resolved in version 3.4.13.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | openexr Debian 14 | 3.4.14-0.1 | [DEBIAN-CVE-2026-54920](https://patchblox.com/security/data/fix/linux/debian-cve-2026-54920.md) | Aug 28, 2026 |
| Linux | openexr opensuse-leap 16.0 | 3.2.2-160000.9.1 | [OPENSUSE-SU-2026:21336-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21336-1.md) | Jul 14, 2026 |
| Linux | openexr sles 15.7 | 2.2.1-150000.3.52.1 | [SUSE-SU-2026:3169-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-3169-1.md) | Jul 21, 2026 |
| Linux | openexr sles 16.0 | 3.2.2-160000.9.1 | [SUSE-SU-2026:22653-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-22653-1.md) | Jul 14, 2026 |

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Data as of 2026-11-08T13:06:02Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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