Out-of-bounds read in oiio - CVE-2026-59956
Published: July 13, 2026
Vulnerability identifier: #VU137381
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-59956
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: OpenImageIO
Affected software:
oiio
oiio
Detailed vulnerability description
The vulnerability allows a remote attacker to disclose sensitive information and cause a denial of service.
The vulnerability exists due to out-of-bounds read in IffInput::readimg() when parsing an uncompressed 16-bit IFF image with the ZBUFFER flag set. A remote attacker can trick the victim into opening a crafted IFF file to disclose sensitive information and cause a denial of service.
No configuration prerequisite is required because the IFF plugin is built and loaded by default.
How to mitigate CVE-2026-59956
Install security update from vendor's website.