# CVE-2025-12840: openexr: Fixed a file parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability [bsc#1253713]

CVE-2025-12840 is fixed in openexr on 1 platform, first by OPENSUSE-SU-2025:20148-1, released December 9, 2025. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2025-12840
- Priority: High
- CVSS: 7.8 (high)
- EPSS: 0.0019
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Dec 9, 2025

## Description

Fixed a file parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability [bsc#1253713]

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | openexr Debian 14 | 3.4.6+ds-1 | [DEBIAN-CVE-2025-12840](https://patchblox.com/security/data/fix/linux/debian-cve-2025-12840.md) | Dec 23, 2025 |
| Linux | openexr opensuse-leap 16.0 | 3.2.2-160000.4.1 | [OPENSUSE-SU-2025:20148-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2025-20148-1.md) | Dec 9, 2025 |
| Linux | openexr sles 16.0 | 3.2.2-160000.4.1 | [SUSE-SU-2025:21189-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-21189-1.md) | Dec 9, 2025 |

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Data as of 2026-11-11T13:47:35Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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