CVE-2026-21676

Color Iccdev buffer overflow

8.8 HIGHPublic exploitEPSS 0.41%

Published6 Jan 2026

Description

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.

CVSS 3.1 breakdown

Attack vectorNetwork

Attack complexityLow

Privileges requiredNone

User interactionRequired

ScopeUnchanged

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Affected products

Color Iccdev< 2.3.1.1

Remediation

Fixed in

Color Iccdev≥ 2.3.1.1

Patch & vendor advisories

References

https://github.com/InternationalColorConsortium/iccDEV/commit/e4c38a67d06073b38d58580b0cfc78ca61005f84Patch
https://github.com/InternationalColorConsortium/iccDEV/issues/215ExploitIssue TrackingVendor Advisory
https://github.com/InternationalColorConsortium/iccDEV/security/advisories/GHSA-j5vv-p2hv-c392PatchVendor Advisory

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

Frequently asked

Is CVE-2026-21676 being actively exploited?

CVE-2026-21676 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.41%.

How severe is CVE-2026-21676?

CVE-2026-21676 has a CVSS 3.1 base score of 8.8, rated high. EPSS estimates a 0.41% probability of exploitation.

Which products are affected by CVE-2026-21676?

Affected products include Color Iccdev.

How do I fix CVE-2026-21676?

Upgrade affected software to a fixed version, for example Color Iccdev 2.3.1.1 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-21676 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.