CVE-2026-59183 AcademySoftwareFoundation CVE debrief

Who should care

Defenders responsible for applications that decode deep tiled EXR files, especially in the motion picture industry, should assess exposure and update OpenEXR to a fixed version. This includes operators, platform administrators, vulnerability management teams, and security teams who need to verify current OpenEXR versions in use and apply updates to 3.2.11, 3.3.13, or 3.4.14 as needed to prevent potential application crashes.

Why it matters

CVE-2026-59183 is a vulnerability in OpenEXR that can cause application crashes when decoding crafted deep tiled EXR files. Defenders in the motion picture industry and those using OpenEXR should verify their versions and update to 3.2.11, 3.3.13, or 3.4.14 as needed.

• Potential application crashes due to decoding crafted EXR files
• Need for verification of current OpenEXR versions in use
• Priority on updating to fixed OpenEXR versions

Technical summary

The unpack_sample_table() function in OpenEXRCore can overflow during the decoding of crafted deep tiled EXR files, leading to a crash due to reading from an unmapped memory address. This issue affects applications decoding such files, particularly in the motion picture industry, and is fixed in OpenEXR versions 3.2.11, 3.3.13, and 3.4.14. The vulnerability arises from an int32_t multiplication overflow, producing an invalid pointer. Fixes are available to prevent application crashes when decoding crafted EXR files.

Defensive priority

Defenders should prioritize updating OpenEXR to a fixed version, especially if applications decode deep tiled EXR files.

Recommended defensive actions

• Update OpenEXR to version 3.2.11, 3.3.13, or 3.4.14
• Assess exposure of applications decoding deep tiled EXR files
• Verify if current OpenEXR versions are in use and require updates
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, its impact, and fixed versions. OpenEXR versions 3.1.0 through 3.2.10, 3.3.0 through 3.3.12, and 3.4.0 through 3.4.13 are affected. Defenders should verify if current OpenEXR versions are in use and require updates to 3.2.11, 3.3.13, or 3.4.14 as needed. Evidence is limited to public CVE and NVD data.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.