CVE-2026-21677: iccDEV has Undefined Behavior in CIccCLUT::Init()

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-01-06 · updated 2026-06-17
Weakness: CWE-20

Description

iccDEV provides a set of libraries and tools for working with ICC color management profiles. Versions 2.3.1 and below have Undefined Behavior in its CIccCLUT::Init function which initializes and sets the size of a CLUT. This issue is fixed in version 2.3.1.1.

Affected products

InternationalColorConsortium iccDEV: before 2.3.1.1 — fixed in 2.3.1.1

How to fix

Upgrade to a fixed version: InternationalColorConsortium iccDEV 2.3.1.1. Check the vendor advisory for mitigations.

References

https://github.com/InternationalColorConsortium/iccDEV/commit/201125fbda22c8e4ea95800a6b427093fa4b8a22
https://github.com/InternationalColorConsortium/iccDEV/issues/181
https://github.com/InternationalColorConsortium/iccDEV/security/advisories/GHSA-95w5-jvqf-3994
https://github.com/InternationalColorConsortium/iccDEV/issues/181

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