What is CVE-2026-21507?

CVE-2026-21507 is a high-severity vulnerability in Color Iccdev, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 7.5/10. Published 2026-01-06.

How severe is CVE-2026-21507?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Color Iccdev

CVE-2026-21507

iccDEV provides a set of libraries and tools for working with ICC color management profiles. Versions 2.3.1 and below have an infinite loop in the IccProfile.cpp function, CalcProfileID. This issue is fixed in version 2.3.1.1.

Published 2026-01-06 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.004 (34.4th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 34.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000

Affected products

Color Iccdev
Internationalcolorconsortium Iccdev — versions < 2.3.1.1

Weakness classification (CWE)

CWE-835 — Loop with Unreachable Exit Condition (Infinite Loop)

References

github.com/InternationalColorConsortium/iccDEV/security/advisories/GHSA-hgp5-r8… (Patch, Vendor Advisory)
github.com/InternationalColorConsortium/iccDEV/issues/244 (Exploit, Issue Tracking, Vendor Advisory)
github.com/InternationalColorConsortium/iccDEV/commit/3f3ce789d0d2b608c194ed172… (Patch)

Frequently asked questions

What is CVE-2026-21507?: CVE-2026-21507 is a high-severity vulnerability in Color Iccdev, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 7.5/10. Published 2026-01-06.
How severe is CVE-2026-21507?: High severity. CVSS v3 base score is 7.5 out of 10.