What’s Vulnerable › Vulnerabilities

CVE-2026-59985: OpenEXR: Heap out-of-bounds read in OpenEXRCore RLE decoding on ILP32

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-25 · updated 2026-09-09
• Weakness: CWE-125

Description

OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion picture industry. OpenEXR versions 3.2.0 through 3.2.10, 3.3.0 through 3.3.12, and 3.4.0 through 3.4.13 are vulnerable on ILP32 builds to a heap out-of-bounds read. The issue occurs when a crafted RLE-compressed EXR causes the 64-bit unpacked size to truncate before allocation in OpenEXRCore decoding.c and unpack_32bit() reads beyond the resulting buffer, allowing denial of service. This issue is fixed in versions 3.2.11, 3.3.13, and 3.4.14.

Affected products

• AcademySoftwareFoundation openexr: from 3.2.0, < 3.2.11; from 3.3.0, < 3.3.13; from 3.4.0, < 3.4.14

References

• https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.2.11
• https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.3.13
• https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.4.14
• https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-v6v5-344m-64vm
• https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-v6v5-344m-64vm

Get alerted when CVE-2026-59985 or the next vulnerability affects your stack