# CVE-2026-34544: openexr: OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for t... CVE-2026-34544 is fixed in 6 products on 1 platform, first by DEBIAN-CVE-2026-34544, released April 1, 2026. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2026-34544 - Priority: High - CVSS: 7.3 (high) - EPSS: 0.0025 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Apr 1, 2026 ## 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. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | openexr Debian 14 | 3.4.14-0.1 | [DEBIAN-CVE-2026-34544](https://patchblox.com/security/data/fix/linux/debian-cve-2026-34544.md) | Apr 1, 2026 | | Linux | openexr RHEL 10 | 3.1.10-8.el10_2.5 | [RHSA-2026:84796](https://patchblox.com/security/data/fix/linux/rhsa-2026-84796.md) | Aug 25, 2026 | | Linux | openexr RHEL 9 | 0:3.1.1-3.el9_8.5 | [RHSA-2026:86983](https://patchblox.com/security/data/fix/linux/rhsa-2026-86983.md) | Oct 24, 2026 | | Linux | openexr almalinux 10 | 3.1.10-8.el10_2.5 | [ALSA-2026:84796](https://patchblox.com/security/data/fix/linux/alsa-2026-84796.md) | Nov 7, 2026 | | Linux | openexr amzn 2023 | 3.1.5-1.amzn2023.0.8 | [ALAS2023-2026-1561](https://patchblox.com/security/data/fix/linux/alas2023-2026-1561.md) | Apr 13, 2026 | | Linux | openexr ol 10 | 0:3.1.10-8.el10_2.5 | [ELSA-2026-84796](https://patchblox.com/security/data/fix/linux/elsa-2026-84796.md) | Nov 7, 2026 | | Linux | openexr ol 9 | 0:3.1.1-3.el9_8.5 | [ELSA-2026-86983](https://patchblox.com/security/data/fix/linux/elsa-2026-86983.md) | Nov 7, 2026 | | Linux | openexr rocky 10 | 0:3.1.10-8.el10_2.5 | [RLSA-2026:84796](https://patchblox.com/security/data/fix/linux/rlsa-2026-84796.md) | Nov 7, 2026 | | Linux | openexr rocky 9 | 0:3.1.1-3.el9_8.5 | [RLSA-2026:86983](https://patchblox.com/security/data/fix/linux/rlsa-2026-86983.md) | Nov 7, 2026 | | Linux | openexr-debuginfo amzn 2023 | 3.1.5-1.amzn2023.0.8 | [ALAS2023-2026-1561](https://patchblox.com/security/data/fix/linux/alas2023-2026-1561.md) | Apr 13, 2026 | | Linux | openexr-debugsource amzn 2023 | 3.1.5-1.amzn2023.0.8 | [ALAS2023-2026-1561](https://patchblox.com/security/data/fix/linux/alas2023-2026-1561.md) | Apr 13, 2026 | | Linux | openexr-devel RHEL 9 | 0:3.1.1-3.el9_8.5 | [RHSA-2026:86983](https://patchblox.com/security/data/fix/linux/rhsa-2026-86983.md) | Oct 24, 2026 | | Linux | openexr-devel almalinux 10 | 3.1.10-8.el10_2.5 | [ALSA-2026:84796](https://patchblox.com/security/data/fix/linux/alsa-2026-84796.md) | Nov 7, 2026 | | Linux | openexr-devel almalinux 9 | 3.1.1-3.el9_8.5 | [ALSA-2026:86983](https://patchblox.com/security/data/fix/linux/alsa-2026-86983.md) | Nov 7, 2026 | | Linux | openexr-devel amzn 2023 | 3.1.5-1.amzn2023.0.8 | [ALAS2023-2026-1561](https://patchblox.com/security/data/fix/linux/alas2023-2026-1561.md) | Apr 13, 2026 | | Linux | openexr-devel ol 10 | 0:3.1.10-8.el10_2.5 | [ELSA-2026-84796](https://patchblox.com/security/data/fix/linux/elsa-2026-84796.md) | Nov 7, 2026 | | Linux | openexr-devel ol 9 | 0:3.1.1-3.el9_8.5 | [ELSA-2026-86983](https://patchblox.com/security/data/fix/linux/elsa-2026-86983.md) | Nov 7, 2026 | | Linux | openexr-libs RHEL 9 | 0:3.1.1-3.el9_8.5 | [RHSA-2026:86983](https://patchblox.com/security/data/fix/linux/rhsa-2026-86983.md) | Oct 24, 2026 | | Linux | openexr-libs almalinux 10 | 3.1.10-8.el10_2.5 | [ALSA-2026:84796](https://patchblox.com/security/data/fix/linux/alsa-2026-84796.md) | Nov 7, 2026 | | Linux | openexr-libs amzn 2023 | 3.1.5-1.amzn2023.0.8 | [ALAS2023-2026-1561](https://patchblox.com/security/data/fix/linux/alas2023-2026-1561.md) | Apr 13, 2026 | | Linux | openexr-libs ol 10 | 0:3.1.10-8.el10_2.5 | [ELSA-2026-84796](https://patchblox.com/security/data/fix/linux/elsa-2026-84796.md) | Nov 7, 2026 | | Linux | openexr-libs ol 9 | 0:3.1.1-3.el9_8.5 | [ELSA-2026-86983](https://patchblox.com/security/data/fix/linux/elsa-2026-86983.md) | Nov 7, 2026 | | Linux | openexr-libs-debuginfo amzn 2023 | 3.1.5-1.amzn2023.0.8 | [ALAS2023-2026-1561](https://patchblox.com/security/data/fix/linux/alas2023-2026-1561.md) | Apr 13, 2026 | --- Data as of 2026-11-08T06:59:42Z UTC. 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