InternationalColorConsortium iccDEV up to 2.3.1.1/2.3.1.2 CIccSparseMatrix heap-based overflow

Summaryinfo

A vulnerability labeled as critical has been found in InternationalColorConsortium iccDEV up to 2.3.1.1/2.3.1.2. This impacts the function CIccSparseMatrix::CIccSparseMatrix. The manipulation results in heap-based overflow. This vulnerability was named CVE-2026-21486. The attack may be performed from remote. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as critical has been found in InternationalColorConsortium iccDEV up to 2.3.1.1/2.3.1.2. Affected is the function CIccSparseMatrix::CIccSparseMatrix. The manipulation with an unknown input leads to a heap-based overflow vulnerability. CWE is classifying the issue as CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is available at github.com. This vulnerability is traded as CVE-2026-21486 since 12/29/2025. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit.

Upgrading to version 2.3.1.2 eliminates this vulnerability. Applying the patch 1ab7363f38a20089934d3410c88f714eea392bf5 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Vendor

• InternationalColorConsortium

Name

• iccDEV

Version

• 2.3.1.0
• 2.3.1.1
• 2.3.1.2

License

• open-source

Website

• Product: https://github.com/InternationalColorConsortium/iccDEV/

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