CVE-2026-54920: CWE-190: Integer Overflow or Wraparound in AcademySoftwareFoundation openexr
Description
A vulnerability in OpenEXR versions 3.4.0 through 3.4.12 allows a crafted HTJ2K-compressed EXR file to cause an unconditional process abort when exr_start_read() is called on untrusted input. This is due to an assertion failure triggered by invalid QCD marker bits passed to the OpenJPH library, resulting in a denial of service. The issue is fixed in version 3.4.13.
CVSS v3.1
Score 0.0none
Affected software
AcademySoftwareFoundation
openexr
pkg:github/academysoftwarefoundation/openexrRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
OpenEXR, used for the EXR image format, contains an integer overflow or wraparound vulnerability in versions 3.4.0 through 3.4.12. The flaw arises in the HTJ2K decode path where a crafted EXR file with a QCD marker having lower five bits set to zero causes an assertion failure in the embedded OpenJPH library. This assertion failure leads to an unconditional process abort that cannot be caught by error handling, causing denial of service in any application calling exr_start_read() on such input. The vulnerability is resolved in OpenEXR version 3.4.13.
Potential Impact
The vulnerability causes a denial of service by crashing any application that processes a maliciously crafted HTJ2K-compressed EXR file. There is no impact on confidentiality or integrity, and no known exploits are reported in the wild.
Mitigation Recommendations
Upgrade to OpenEXR version 3.4.13 or later, where this issue has been fixed. No other mitigations are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-06-16T13:49:33.557Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a8ce3d2acd9273b495f0b89
Added to database: 08/25/2026, 00:37:38 UTC
Last enriched: 09/10/2026, 20:48:37 UTC
Last updated: 10/08/2026, 18:48:46 UTC
Views: 82
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