CVE-2026-21686

7.1

International Color Consortium · iccDEV

The iccDEV library contains an undefined behavior vulnerability in the CIccTagLutAtoB::Validate() function, which can be triggered by processing malicious ICC color profiles.

Executive summary

A critical vulnerability in the International Color Consortium iccDEV library allows an unauthenticated attacker to cause a denial of service or data integrity issues through malformed ICC profiles.

Vulnerability

The flaw stems from improper input validation and reliance on undefined behavior within the CIccTagLutAtoB::Validate() function. An unauthenticated attacker can exploit this by providing a crafted ICC color profile to an application utilizing the library.

Business impact

The vulnerability carries a CVSS score of 7.1, indicating a high risk to availability and system stability. Successful exploitation can lead to service crashes or the manipulation of color management logic, potentially impacting applications that rely on consistent color rendering, such as design software or automated printing pipelines.

Remediation

Immediate Action: Update the iccDEV library to version 2.3.1.2 or later immediately to incorporate the necessary patches.

Proactive Monitoring: Review application logs for crashes or errors associated with ICC profile processing and monitor system resource usage for unexpected spikes.

Compensating Controls: Since no workarounds are available, ensure that any incoming ICC profiles are processed within a sandboxed or isolated environment to contain the impact of a potential crash.

Exploitation status

Public Exploit Available: Unknown.

Analyst recommendation

Given the potential for denial of service and the lack of available workarounds, organizations should prioritize upgrading the iccDEV library. Users of software bundles that include this library should check with their vendors for updated releases to ensure the patch is applied across all affected systems.

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