CVE-2026-21692
Published: 07 January 2026
Summary
CVE-2026-21692 is a high-severity Improper Input Validation (CWE-20) vulnerability in Color Iccdev. Its CVSS base score is 8.8 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Client Execution (T1203); ranked at the 22.3th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
The strongest mitigations our analysis identified are NIST 800-53 SI-2 (Flaw Remediation) and SI-10 (Information Input Validation).
Deeper analysis
CVE-2026-21692 is a Type Confusion vulnerability in the iccDEV library, which provides tools and libraries for interacting with, manipulating, and applying International Color Consortium (ICC) color management profiles. The flaw resides in the `ToXmlCurve()` function within the file `IccXML/IccLibXML/IccMpeXml.cpp` and affects all versions prior to 2.3.1.2. It impacts any applications or users of the iccDEV library that process ICC color profiles.
The vulnerability has a CVSS v3.1 base score of 8.8 (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H), indicating it is exploitable over the network with low complexity, no privileges required, but user interaction is needed. Attackers can craft malicious ICC profiles to trigger the type confusion when processed by affected software, potentially leading to high-impact consequences including arbitrary code execution, data corruption, or denial of service, as reflected in the associated CWEs: CWE-20 (Improper Input Validation), CWE-588 (Attempt to Access Child of a Non-structure Type), CWE-704 (Incorrect Type Conversion or Cast), and CWE-843 (Access of Resource Using Incompatible Type).
Mitigation is available via an update to iccDEV version 2.3.1.2, which includes a patch for the issue. No known workarounds exist. Relevant advisories and fixes are detailed in the GitHub security advisory (GHSA-7662-mf46-wr88), issue tracker (#388), and pull request (#432) from the InternationalColorConsortium/iccDEV repository.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-1385
Vulnerability details
iccDEV provides a set of libraries and tools that allow for the interaction, manipulation, and application of International Color Consortium (ICC) color management profiles. Versions prior to 2.3.1.2 have a Type Confusion vulnerability in `ToXmlCurve()` at `IccXML/IccLibXML/IccMpeXml.cpp`. This vulnerability affects…
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users of the iccDEV library who process ICC color profiles. Version 2.3.1.2 contains a patch. No known workarounds are available.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Type confusion in iccDEV library enables arbitrary code execution via crafted ICC profiles processed by client applications, directly facilitating Exploitation for Client Execution (T1203).
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
SI-2 requires timely remediation of flaws such as this type confusion vulnerability by applying the patch in iccDEV version 2.3.1.2.
SI-10 mandates validation of information inputs like ICC color profiles to prevent improper processing that triggers the type confusion in ToXmlCurve().
SI-16 implements memory protections that mitigate exploitation of type confusion vulnerabilities leading to arbitrary code execution or corruption.