CVE-2026-59983: CWE-125: Out-of-bounds Read in AcademySoftwareFoundation openexr
Description
An out-of-bounds read vulnerability (CWE-125) exists in the AcademySoftwareFoundation OpenEXR library on ILP32 builds. It occurs in versions before 3.2.11, 3.3.0 through 3.3.12, and 3.4.0 through 3.4.13 when processing crafted uncompressed deep-tile EXR images. The vulnerability can cause a denial of service due to a sample-count table size calculation wrap leading to out-of-bounds memory access. Fixed versions include 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
OpenEXR, a widely used image format library in the motion picture industry, has an out-of-bounds read vulnerability on ILP32 builds. The flaw arises when a specially crafted uncompressed deep-tile EXR image triggers an integer wrap in the sample-count table size calculation within OpenEXRCore's decoding.c. This wrap causes unpack_sample_table() to iterate beyond the allocated buffer, leading to out-of-bounds memory access and denial of service. The issue affects versions prior to 3.2.11, all 3.3.0 through 3.3.12, and 3.4.0 through 3.4.13. The vulnerability has been addressed in versions 3.2.11, 3.3.13, and 3.4.14.
Potential Impact
The vulnerability allows denial of service by causing the application using OpenEXR to read out-of-bounds memory during image decoding. There is no impact on confidentiality or integrity. The CVSS score is 5.5 (medium severity), reflecting local attack vector, low complexity, no privileges required, user interaction required, and impact limited to availability.
Mitigation Recommendations
Upgrade OpenEXR to version 3.2.11, 3.3.13, or 3.4.14 or later to remediate this vulnerability. No other mitigations are indicated by the vendor advisory. Patch status is confirmed fixed in these versions.
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: 6a8ddd81acd9273b498da1dd
Added to database: 08/25/2026, 18:22:57 UTC
Last enriched: 09/10/2026, 17:53:57 UTC
Last updated: 10/09/2026, 06:48:18 UTC
Views: 66
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