CVE-2026-21691: color iccdev Improper Input Validation

Vulnerability summary

CVE-2026-21691 is a medium (CVSS 6.5) Improper Input Validation vulnerability in color iccdev. EPSS estimates a 0.29% chance of exploitation in the next 30 days, higher than 20.3% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 07-01-2026
   PublishedVulnerability first disclosed.
2. 08-01-2026
   Last modifiedVulnerability information updated.

Description

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 `CIccTag:IsTypeCompressed()`. This vulnerability affects users of the iccDEV library who process ICC color profiles. Version 2.3.1.2 contains a patch. No known workarounds are available.

• CWE-20Improper Input ValidationThe product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
• CWE-140Improper Neutralization of DelimitersThe product does not neutralize or incorrectly neutralizes delimiters.
• CWE-476NULL Pointer DereferenceThe product dereferences a pointer that it expects to be valid but is NULL.
• CWE-697Incorrect ComparisonThe product compares two entities in a security-relevant context, but the comparison is incorrect.
• CWE-1025Comparison Using Wrong FactorsThe code performs a comparison between two entities, but the comparison examines the wrong factors or characteristics of the entities, which can lead to incorrect results and resultant weaknesses.
• CWE-843Access of Resource Using Incompatible Type ('Type Confusion')The product allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type.