CVE-2026-21491

Name: CVE-2026-21491
Creator: NVD / NIST
Published: 2026-01-06T19:16:08.907+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.1/10EPSS 0.18%

Last modified Jun 17, 2026

CVE-2026-21491 is a high-severity vulnerability rated 7.1/10 on the CVSS scale. iccDEV provides a set of libraries and tools that allow for the interaction, manipulation, and application of International Color Consortium (ICC) color management profiles. A vulnerability present in versions prior to 2.3.1.2 affects users of the iccDEV library who process ICC color profiles. EPSS estimates a 0.18% chance of exploitation in the next 30 days.

Description

iccDEV provides a set of libraries and tools that allow for the interaction, manipulation, and application of International Color Consortium (ICC) color management profiles. A vulnerability present in versions prior to 2.3.1.2 affects users of the iccDEV library who process ICC color profiles. It results in unicode buffer overflow in `CIccTagTextDescription`. Version 2.3.1.2 contains a patch. No known workarounds are available.

Metrics

CVSS 3.1

7.1/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H

EPSS Probability

0.18%

8.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Color	Iccdev	< 2.3.1.2

References

https://github.com/InternationalColorConsortium/iccDEV/commit/7c2cb719a9de1c00844e457e070d657314383ee3Patch
https://github.com/InternationalColorConsortium/iccDEV/commit/e91fe722ac54ce497d410153e7405090e0565d7bPatch
https://github.com/InternationalColorConsortium/iccDEV/issues/396Exploit, Issue Tracking, Vendor Advisory
https://github.com/InternationalColorConsortium/iccDEV/security/advisories/GHSA-4pv4-4x2x-6j88Patch, Vendor Advisory

Timeline

Published: Jan 6, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-21491?

How severe is CVE-2026-21491?

CVE-2026-21491 has a CVSS score of 7.1/10 (HIGH severity). The EPSS model estimates a 0.18% probability of exploitation in the next 30 days.

How do I fix CVE-2026-21491?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-21491?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST