# CVE-2025-64181: openexr: OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for t...

CVE-2025-64181 is fixed in openexr on 1 platform, first by DEBIAN-CVE-2025-64181, released November 10, 2025. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2025-64181
- Priority: High
- CVSS: 7.5 (high)
- EPSS: 0.0041
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Nov 10, 2025

## Description

OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. In versions 3.3.0 through 3.3.5 and 3.4.0 through 3.4.2, while fuzzing `openexr_exrcheck_fuzzer`, Valgrind reports a conditional branch depending on uninitialized data inside `generic_unpack`. This indicates a use of uninitialized memory. The issue can result in undefined behavior and/or a potential crash/denial of service. Versions 3.3.6 and 3.4.3 fix the issue.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | openexr Debian 14 | 3.4.6+ds-1 | [DEBIAN-CVE-2025-64181](https://patchblox.com/security/data/fix/linux/debian-cve-2025-64181.md) | Nov 10, 2025 |
| Linux | openexr opensuse-leap 16.0 | 3.2.2-160000.3.1 | [OPENSUSE-SU-2025:20056-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2025-20056-1.md) | Nov 19, 2025 |
| Linux | openexr sles 16.0 | 3.2.2-160000.3.1 | [SUSE-SU-2025:21014-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-21014-1.md) | Nov 19, 2025 |

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Data as of 2026-11-08T06:59:42Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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