CVE-2026-54920
Publiée le 2026-08-25 · Dernière modification le 2026-10-12
Les applications qui utilisent la bibliothèque OpenEXR (versions 3.4.0 à 3.4.12) pour traiter des images sont concernées. Un attaquant peut provoquer le plantage de l'application en fournissant un fichier EXR compressé en HTJ2K spécialement conçu, entraînant ainsi un déni de service. Cela peut être réalisé à distance, sans authentification ni interaction de l'utilisateur, à condition que le logiciel traite des fichiers images non approuvés.
DÉTAIL DU VECTEUR CVSS
RÉFÉRENCES
Description officielle du NVD (en anglais)
OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion picture industry. In versions 3.4.0 through 3.4.12, a reachable assertion failure in the HTJ2K decode path allows a crafted HTJ2K-compressed EXR file to cause an unconditional process abort in any application that calls exr_start_read() on untrusted input, resulting in denial of service. The crash is triggered by a QCD marker whose lower five bits are zero, which OpenEXR passes into the vendored OpenJPH library while constructing the codestream and evaluating its quantization delta parameters. OpenJPH uses an assertion rather than a recoverable error to validate those bits, so any invalid value calls abort() directly and cannot be intercepted by surrounding error handling, a problem compounded by OpenEXR wrapping only its internal HT header parser in error handling while leaving the later codestream read and construction calls unprotected. This issue has been resolved in version 3.4.13.