CVE-2026-59985: CWE-125: Out-of-bounds Read in AcademySoftwareFoundation openexr
Description
OpenEXR versions 3.2.0 through 3.2.10, 3.3.0 through 3.3.12, and 3.4.0 through 3.4.13 on ILP32 builds contain a heap out-of-bounds read vulnerability. This occurs when processing a crafted RLE-compressed EXR file that causes a 64-bit unpacked size truncation before allocation, leading to reads beyond the allocated buffer. The vulnerability can result in denial of service. Fixed versions are 3.2.11, 3.3.13, and 3.4.14.
CVSS v3.1
Score 5.5medium
Affected software
AcademySoftwareFoundation
openexr
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-59985 is a heap out-of-bounds read vulnerability in the AcademySoftwareFoundation's OpenEXR library affecting ILP32 builds. The flaw arises in the OpenEXRCore decoding.c and unpack_32bit() functions when a crafted RLE-compressed EXR file causes the 64-bit unpacked size to truncate before memory allocation. This truncation leads to reading beyond the allocated buffer, enabling denial of service conditions. The vulnerability affects OpenEXR versions 3.2.0 through 3.2.10, 3.3.0 through 3.3.12, and 3.4.0 through 3.4.13. The issue is resolved in versions 3.2.11, 3.3.13, and 3.4.14.
Potential Impact
The vulnerability allows an attacker to cause a denial of service by triggering a heap out-of-bounds read during the decoding of a specially crafted RLE-compressed EXR image. There is no indication of confidentiality or integrity impact. The CVSS score is 5.5 (medium severity), reflecting local attack vector with low complexity and no privileges required but requiring user interaction.
Mitigation Recommendations
A fix is available in OpenEXR versions 3.2.11, 3.3.13, and 3.4.14. Users should upgrade to these or later versions to remediate the vulnerability. No additional mitigation steps are indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-07-07T19:41:00.004Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a8de143acd9273b4991a193
Added to database: 08/25/2026, 18:38:59 UTC
Last enriched: 09/10/2026, 17:53:28 UTC
Last updated: 10/08/2026, 18:48:47 UTC
Views: 55
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