CVE-2026-21491: iccDEV provides a set of libraries and tools that allow for the interaction, manipulation, and application of

Q: How do I fix CVE-2026-21491?

iccdev: upgrade to 2.3.1.2. Exact commands for each OS are on this page.

Q: Is CVE-2026-21491 being exploited?

CVE-2026-21491 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-21491 affect?

CVE-2026-21491 affects iccdev. Severity is medium (CVSS 6.1). 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

Q: How urgent is CVE-2026-21491?

Priority 30/100. Public exploit reference

Routine

MEDIUM 6.1UPGRADE

CVE-2026-21491 is a medium-severity flaw (CVSS 6.1) affecting iccdev. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.2% (top 87%)
CISA exploited list	No
Weakness	CWE-122, CWE-125, CWE-193
Published	2026-01-06
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: color

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-01-06 19:16 UTCPublished CVE record published
2026-06-17 10:18 UTCUpdated Record last modified

color iccdev UPGRADE

Affected: < 2.3.1.2

Fixed in: 2.3.1.2

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy iccdev || rpm -q iccdev || iccdev --version

2. UPGRADE to 2.3.1.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade iccdev

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade iccdev

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-21491?

iccdev: upgrade to 2.3.1.2. Exact commands for each OS are on this page.

Is CVE-2026-21491 being exploited?

CVE-2026-21491 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-21491 affect?

CVE-2026-21491 affects iccdev. Severity is medium (CVSS 6.1). 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

How urgent is CVE-2026-21491?

Priority 30/100. Public exploit reference

Related CVEs

CVE-2026-31797 MEDIUM 6.1 UPGRADE iccDEV provides a set of libraries and tools for working with ICC color management profiles
CVE-2026-31796 HIGH 7.8 UPGRADE iccDEV provides a set of libraries and tools for working with ICC color management profiles
CVE-2026-31795 HIGH 7.8 UPGRADE iccDEV provides a set of libraries and tools for working with ICC color management profiles
CVE-2026-31794 MEDIUM 5.5 UPGRADE iccDEV provides a set of libraries and tools for working with ICC color management profiles
CVE-2026-31793 MEDIUM 5.5 UPGRADE iccDEV provides a set of libraries and tools for working with ICC color management profiles

References

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