CVE-2026-21680
Published: 07 January 2026
Summary
CVE-2026-21680 is a medium-severity NULL Pointer Dereference (CWE-476) vulnerability in Color Iccdev. Its CVSS base score is 6.5 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Application or System Exploitation (T1499.004); ranked at the 12.6th 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-10 (Information Input Validation) and SI-2 (Flaw Remediation).
Deeper analysis
CVE-2026-21680 is a NULL pointer dereference vulnerability (CWE-476) in the iccDEV library, a set of libraries and tools for interacting with, manipulating, and applying International Color Consortium (ICC) color management profiles. The flaw affects versions prior to 2.3.1.2 and impacts any users or applications that process ICC color profiles using this library.
An unauthenticated remote attacker can exploit this vulnerability over the network with low complexity by tricking a user into processing a specially crafted malicious ICC profile, which requires user interaction. Successful exploitation results in a denial-of-service condition due to application crash, with a CVSS v3.1 base score of 6.5 (AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H), but no impact on confidentiality or integrity.
The project maintainers have addressed the issue in version 2.3.1.2 via a patch, with details available in GitHub issue #322, pull request #325, and security advisory GHSA-mgp7-w4w3-mhx4. No known workarounds exist for affected versions.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-1413
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 NULL pointer dereference vulnerability. This vulnerability affects users of the…
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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?
NULL deref in ICC profile parser enables crafted file delivery (T1204.002) leading to app crash DoS via vulnerability exploitation (T1499.004).
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly requires applying the vendor patch in version 2.3.1.2 that eliminates the NULL dereference when processing malicious ICC profiles.
Mandates validation of input data (ICC profiles) to reject malformed content that triggers the NULL pointer dereference and resulting DoS.
Requires integrity verification of the iccDEV library and profile inputs to ensure only patched, untampered components are used.