# CVE-2021-26260: libopenexr22: An integer overflow leading to a heap-buffer overflow was found in the DwaCompressor of OpenEXR in versions before 3.0.1

CVE-2021-26260 is fixed in 3 products on 1 platform, first by libopenexr22 2.2.0-11.1ubuntu1.7, released June 16, 2021. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2021-26260
- Priority: Routine
- CVSS: n/a (Low)
- EPSS: 0.0105
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jun 8, 2021

## Description

An integer overflow leading to a heap-buffer overflow was found in the DwaCompressor of OpenEXR in versions before 3.0.1. An attacker could use this flaw to crash an application compiled with OpenEXR. This is a different flaw from CVE-2021-23215.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libopenexr22 Ubuntu 18.04.6 LTS (bionic) | 2.2.0-11.1ubuntu1.7 | [libopenexr22 2.2.0-11.1ubuntu1.7](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libopenexr22-2.2.0-11.1ubuntu1.7.md) | Jun 16, 2021 |
| Linux | libopenexr24 Ubuntu 20.04 LTS (focal) | 2.3.0-6ubuntu0.5+esm1 | [libopenexr24 2.3.0-6ubuntu0.5+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libopenexr24-2.3.0-6ubuntu0.5-esm1.md) | Nov 10, 2021 |
| Linux | openexr Ubuntu 18.04.6 LTS (bionic) | 2.2.0-11.1ubuntu1.7 | [openexr 2.2.0-11.1ubuntu1.7](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-openexr-2.2.0-11.1ubuntu1.7.md) | Jun 16, 2021 |
| Linux | openexr Ubuntu 20.04 LTS (focal) | 2.3.0-6ubuntu0.5+esm1 | [openexr 2.3.0-6ubuntu0.5+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-openexr-2.3.0-6ubuntu0.5-esm1.md) | Nov 10, 2021 |

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Data as of 2026-11-09T07:25:28Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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