Medium severity · published Aug 25, 2026
CVE-2026-59985
OpenEXR: Heap out-of-bounds read in OpenEXRCore RLE decoding on ILP32
5.5
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 7% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OP
openexr · AcademySoftwareFoundation
>= 3.2.0, < 3.2.11; >= 3.3.0, < 3.3.13; >= 3.4.0, < 3.4.14 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-59985
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-59985
github.com
https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.2.11
github.com
https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.3.13
github.com
https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.4.14
github.com
https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-v6v5-344m-64vm
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