CVE-2026-53532: CWE-617: Reachable Assertion in AcademySoftwareFoundation openexr
A reachable assertion vulnerability exists in AcademySoftwareFoundation's OpenEXR versions 3.4.0 through 3.4.12. A crafted HTJ2K-compressed EXR file with a specific QCD marker causes an unconditional process abort when processed by exr_start_read(), leading to denial of service. The issue stems from the OpenJPH library using an assertion instead of recoverable error handling for invalid quantization delta parameters. This vulnerability is fixed in version 3.4.13.
AI Analysis
Technical Summary
OpenEXR, used for the EXR image format, versions 3.4.0 through 3.4.12 contain a reachable assertion vulnerability (CWE-617) triggered by a crafted HTJ2K-compressed EXR file. The vulnerability occurs when exr_start_read() processes a file containing a QCD marker with its lower five bits set to zero. OpenEXR passes this value to the embedded OpenJPH library, which uses an assertion to validate these bits. If invalid, OpenJPH calls abort() directly, causing an unconditional process termination that cannot be caught by error handling. OpenEXR only protects its internal HT header parser with error handling, leaving the codestream read and construction calls exposed. This results in a denial of service. The issue is resolved in OpenEXR version 3.4.13.
Potential Impact
The vulnerability causes an unconditional process abort (denial of service) when processing crafted EXR files with specific malformed HTJ2K compression markers. This affects any application using vulnerable OpenEXR versions that call exr_start_read() on untrusted input. There is no indication of code execution or data corruption beyond denial of service.
Mitigation Recommendations
A fix is available in OpenEXR version 3.4.13. Users and vendors should upgrade to this version to remediate the vulnerability. Until then, avoid processing untrusted HTJ2K-compressed EXR files with vulnerable versions. Patch status is not explicitly stated beyond the fix in 3.4.13; check the vendor advisory for detailed remediation guidance.
CVE-2026-53532: CWE-617: Reachable Assertion in AcademySoftwareFoundation openexr
Description
A reachable assertion vulnerability exists in AcademySoftwareFoundation's OpenEXR versions 3.4.0 through 3.4.12. A crafted HTJ2K-compressed EXR file with a specific QCD marker causes an unconditional process abort when processed by exr_start_read(), leading to denial of service. The issue stems from the OpenJPH library using an assertion instead of recoverable error handling for invalid quantization delta parameters. This vulnerability is fixed in version 3.4.13.
CVSS v4.0
Score 7.1high
Affected software
pkg:github/academysoftwarefoundation/openexrRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
OpenEXR, used for the EXR image format, versions 3.4.0 through 3.4.12 contain a reachable assertion vulnerability (CWE-617) triggered by a crafted HTJ2K-compressed EXR file. The vulnerability occurs when exr_start_read() processes a file containing a QCD marker with its lower five bits set to zero. OpenEXR passes this value to the embedded OpenJPH library, which uses an assertion to validate these bits. If invalid, OpenJPH calls abort() directly, causing an unconditional process termination that cannot be caught by error handling. OpenEXR only protects its internal HT header parser with error handling, leaving the codestream read and construction calls exposed. This results in a denial of service. The issue is resolved in OpenEXR version 3.4.13.
Potential Impact
The vulnerability causes an unconditional process abort (denial of service) when processing crafted EXR files with specific malformed HTJ2K compression markers. This affects any application using vulnerable OpenEXR versions that call exr_start_read() on untrusted input. There is no indication of code execution or data corruption beyond denial of service.
Mitigation Recommendations
A fix is available in OpenEXR version 3.4.13. Users and vendors should upgrade to this version to remediate the vulnerability. Until then, avoid processing untrusted HTJ2K-compressed EXR files with vulnerable versions. Patch status is not explicitly stated beyond the fix in 3.4.13; check the vendor advisory for detailed remediation guidance.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-06-09T17:30:33.457Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a8cc7b1acd9273b49388883
Added to database: 08/24/2026, 22:37:37 UTC
Last enriched: 08/24/2026, 22:52:05 UTC
Last updated: 08/24/2026, 22:52:05 UTC
Views: 5
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