Type conversion in OpenEXR - CVE-2026-34379
Published: April 8, 2026
Vulnerability identifier: #VU125332
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-34379
CWE-ID: CWE-704
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: OpenEXR
Affected software:
OpenEXR
OpenEXR
Detailed vulnerability description
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to incorrect type conversion or cast in LossyDctDecoder_execute() when decoding a DWA- or DWAB-compressed EXR file containing a FLOAT-type channel. A remote attacker can supply a specially crafted EXR file to cause a denial of service.
User interaction is required to open or process the crafted file.
How to mitigate CVE-2026-34379
Install security update from vendor's website.