What is CVE-2026-21673?

CVE-2026-21673 is a high-severity vulnerability in Color Iccdev, classified under Integer Overflow or Wraparound. CVSS score: 7.8/10. Published 2026-01-06.

How severe is CVE-2026-21673?

High severity. CVSS v3 base score is 7.8 out of 10.

Integer overflow in Color Iccdev

CVE-2026-21673

iccDEV provides a set of libraries and tools for working with ICC color management profiles. Versions 2.3.1 and below have overflows and underflows in CIccXmlArrayType::ParseTextCountNum(). This vulnerability affects users of the iccDEV library who process ICC color profiles. This issue is fixed in version 2.3.1.1.

Vulnerability class: Integer Overflow

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

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.002 (8.1th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 8th percentile — 8.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000

Affected products

Color Iccdev
Internationalcolorconsortium Iccdev — versions < 2.3.1.1

Weakness classification (CWE)

References

github.com/InternationalColorConsortium/iccDEV/security/advisories/GHSA-g66g-f8… (Patch, Vendor Advisory)
github.com/InternationalColorConsortium/iccDEV/issues/243 (Exploit, Issue Tracking, Vendor Advisory)
github.com/InternationalColorConsortium/iccDEV/commit/32740802ee14418bd14c429d7… (Patch)

Frequently asked questions

What is CVE-2026-21673?: CVE-2026-21673 is a high-severity vulnerability in Color Iccdev, classified under Integer Overflow or Wraparound. CVSS score: 7.8/10. Published 2026-01-06.
How severe is CVE-2026-21673?: High severity. CVSS v3 base score is 7.8 out of 10.