What is CVE-2026-21486?

CVE-2026-21486 is a high-severity vulnerability in Color Iccdev, classified under Heap-based Buffer Overflow. CVSS score: 7.8/10. Published 2026-01-06.

How severe is CVE-2026-21486?

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

Buffer overflow in Color Iccdev

CVE-2026-21486

iccDEV provides a set of libraries and tools for working with ICC color management profiles. Versions 2.3.1.1 and below contain Use After Free, Heap-based Buffer Overflow and Integer Overflow or Wraparound and Out-of-bounds Write vulnerabilities in its CIccSparseMatrix::CIccSparseMatrix function. This issue is fixed in version 2.3.1.2.

Vulnerability class: Buffer 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 (4.0th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 4th percentile — 4.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.001 · newest: 0.002 · change: +0.000

Affected products

Color Iccdev
Internationalcolorconsortium Iccdev — versions < 2.3.1.2

Weakness classification (CWE)

References

github.com/InternationalColorConsortium/iccDEV/security/advisories/GHSA-mg98-j5… (Patch, Vendor Advisory)
github.com/InternationalColorConsortium/iccDEV/commit/1ab7363f38a20089934d3410c… (Patch)

Frequently asked questions

What is CVE-2026-21486?: CVE-2026-21486 is a high-severity vulnerability in Color Iccdev, classified under Heap-based Buffer Overflow. CVSS score: 7.8/10. Published 2026-01-06.
How severe is CVE-2026-21486?: High severity. CVSS v3 base score is 7.8 out of 10.