Out-of-bounds Read in Academysoftwarefoundation Openexr
CVE-2026-59983
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.
Vulnerability class: Buffer Overflow
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
Affected products
- Academysoftwarefoundation Openexr — versions < 3.2.11, >= 3.3.0, < 3.3.13, >= 3.4.0, < 3.4.14
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_CONFIRM)
Frequently asked questions
- What is CVE-2026-59983?
- CVE-2026-59983 is a medium-severity vulnerability in Academysoftwarefoundation Openexr, classified under Out-of-bounds Read. CVSS score: 5.5/10. Published 2026-08-25.
- How severe is CVE-2026-59983?
- Medium severity. CVSS v3 base score is 5.5 out of 10.