CVE-2026-34550: iccDEV: UB at IccIO.cpp

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-03-31 · updated 2026-06-17
Weakness: CWE-681

Description

iccDEV provides a set of libraries and tools for working with ICC color management profiles. Prior to version 2.3.1.6, there is an Undefined Behavior (UB) condition in IccProfLib/IccIO.cpp caused by an implicit conversion from a negative signed integer to size_t (unsigned), which changes the value. This issue has been patched in version 2.3.1.6.

Affected products

InternationalColorConsortium iccDEV: before 2.3.1.6 — fixed in 2.3.1.6

How to fix

Upgrade to a fixed version: InternationalColorConsortium iccDEV 2.3.1.6. Check the vendor advisory for mitigations.

References

https://github.com/InternationalColorConsortium/iccDEV/issues/718
https://github.com/InternationalColorConsortium/iccDEV/pull/727
https://github.com/InternationalColorConsortium/iccDEV/security/advisories/GHSA-rmxp-pxf4-p7wm

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