What’s Vulnerable › Vulnerabilities

CVE-2026-59983: OpenEXR: Out-of-bounds read in DeepTiledInputFile sample-count table decode 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 before 3.2.11, 3.3.0 through 3.3.12, and 3.4.0 through 3.4.13 are vulnerable on ILP32 builds to an out-of-bounds read. The vulnerability is reached when a crafted uncompressed deep-tile EXR causes the sample-count table size calculation in OpenEXRCore decoding.c to wrap before unpack_sample_table() iterates over the full attacker-controlled tile dimensions, allowing denial of service. This issue is fixed in versions 3.2.11, 3.3.13, and 3.4.14.

Affected products

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

References

• https://github.com/AcademySoftwareFoundation/openexr/commit/0efec58d2d28a0ee322f5028dee6fb57d459580e
• https://github.com/AcademySoftwareFoundation/openexr/commit/78e91146fceeee317820a146ba99a96f380945b8
• https://github.com/AcademySoftwareFoundation/openexr/commit/f0e404f7298cd8563a1d30a64a1c982dbd68fc49
• https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-p42q-g5c9-mh9w
• https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-p42q-g5c9-mh9w

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