CVE-2026-34544 (GCVE-0-2026-34544)

Vulnerability from cvelistv5 – Published: 2026-04-01 20:55 – Updated: 2026-04-02 18:02
VLAI
Title
OpenEXR: integer overflow to OOB write in uncompress_b44_impl()
Summary
OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From version 3.4.0 to before version 3.4.8, a crafted B44 or B44A EXR file can cause an out-of-bounds write in any application that decodes it via exr_decoding_run(). Consequences range from immediate crash (most likely) to corruption of adjacent heap allocations (layout-dependent). This issue has been patched in version 3.4.8.
Severity
8.4 (High)
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-02 18:02 UTC
CWE
  • CWE-190 - Integer Overflow or Wraparound
  • CWE-787 - Out-of-bounds Write
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7609 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
AcademySoftwareFoundation openexr Affected: >= 3.4.0, < 3.4.8
guessed Create a notification for this product.
Show details on NVD website
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