CVE-2026-55059
Fixed in a distro release EPSS <1%CVSS 6.1
OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion picture industry. Versions prior to 3.2.10, 3.3.12 and 3.4.13 contain a heap out-of-bounds write in Imf_4_0::SampleCountChannel::set(int r, unsigned int newNumSamples[]). The row-based sample-count setter computes the target Y coordinate with dataWindow.min.x instead of dataWindow.min.y. For a valid deep image data window where min.x != min.y, a valid row index can be translated into an invalid Y coordinate, causing writes before the allocated _numSamples buffer. The vulnerability is reachable through the public OpenEXRUtil DeepImage API and can lead to heap corruption and process crashes. This issue has been fixed in versions 3.2.10, 3.3.12 and 3.4.13.
Products: AcademySoftwareFoundation openexr
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Amazon Linux 2023 | openexr | 3.1.5-1.amzn2023.0.12 |
| Amazon Linux 2023 | openexr-devel | 3.1.5-1.amzn2023.0.12 |
| Amazon Linux 2023 | openexr-libs | 3.1.5-1.amzn2023.0.12 |
| Debian 12 | openexr | no fix |
| Debian 13 | openexr | no fix |
| Debian 14 | openexr | 3.4.14-0.1 |
| SUSE Linux Enterprise Module for Desktop Applications 15 SP7 | openexr | 2.2.1-150000.3.52.1 |
| SUSE Linux Enterprise Server 16.0 | openexr | 3.2.2-160000.9.1 |
| SUSE Linux Enterprise Server for SAP applications 16.0 | openexr | 3.2.2-160000.9.1 |
| Ubuntu 26.10 | openexr | no fix |
| Ubuntu Pro 16.04 LTS | openexr | no fix |
| Ubuntu Pro 18.04 LTS | openexr | no fix |
| Ubuntu Pro 20.04 LTS | openexr | no fix |
| Ubuntu Pro 22.04 LTS | openexr | no fix |
| Ubuntu Pro 24.04 LTS | openexr | no fix |
| Ubuntu Pro 26.04 LTS | openexr | no fix |
| openSUSE Leap 16.0 | openexr | 3.2.2-160000.9.1 |
| openSUSE Tumbleweed | openexr | 3.4.13-1.1 |