CVE-2026-21676: iccDEV provides a set of libraries and tools for working with ICC color management profiles

Q: How do I fix CVE-2026-21676?

iccdev: upgrade to 2.3.1.1. Exact commands for each OS are on this page.

Q: Is CVE-2026-21676 being exploited?

CVE-2026-21676 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-2026-21676 affect?

CVE-2026-21676 affects iccdev. Severity is high (CVSS 8.8). iccDEV provides a set of libraries and tools for working with ICC color management profiles. Versions 2.3.1 and below have a Heap-based Buffer Overflow in its CIccMBB::Validate function which checks tag data validity. This issue is fixed in

Q: How urgent is CVE-2026-21676?

Priority 45/100. High severity; Public exploit reference

This month

HIGH 8.8UPGRADE

CVE-2026-21676 is a high-severity flaw (CVSS 8.8) 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 for working with ICC color management profiles. Versions 2.3.1 and below have a Heap-based Buffer Overflow in its CIccMBB::Validate function which checks tag data validity. This issue is fixed in version 2.3.1.1.

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.4% (top 65%)
CISA exploited list	No
Weakness	CWE-122
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 04:15 UTCPublished CVE record published
2026-06-17 10:18 UTCUpdated Record last modified

color iccdev UPGRADE

Affected: < 2.3.1.1

Fixed in: 2.3.1.1

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 2.3.1.1 (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-2026-21676?

iccdev: upgrade to 2.3.1.1. Exact commands for each OS are on this page.

Is CVE-2026-21676 being exploited?

CVE-2026-21676 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-2026-21676 affect?

CVE-2026-21676 affects iccdev. Severity is high (CVSS 8.8). iccDEV provides a set of libraries and tools for working with ICC color management profiles. Versions 2.3.1 and below have a Heap-based Buffer Overflow in its CIccMBB::Validate function which checks tag data validity. This issue is fixed in

How urgent is CVE-2026-21676?

Priority 45/100. High severity; 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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