CVE-2026-21676
8.8International Color Consortium · iccDEV
A heap-based buffer overflow exists in the CIccMBB::Validate function of iccDEV versions 2.3.1 and below, which may allow attackers to trigger memory corruption via malicious ICC color profiles.
Executive summary
A heap-based buffer overflow vulnerability in the International Color Consortium iccDEV library poses a significant risk of arbitrary code execution or system instability.
Vulnerability
The vulnerability is a heap-based buffer overflow (CWE-122) located in the CIccMBB::Validate function. An unauthenticated attacker can trigger this flaw by providing a specially crafted ICC color profile, leading to potential memory corruption.
Business impact
The vulnerability carries a CVSS score of 8.8, indicating a high severity risk. Successful exploitation could allow an attacker to gain unauthorized control over the affected system or cause a denial of service, potentially leading to significant data loss or operational disruption within environments that process ICC profiles.
Remediation
Immediate Action: Update the iccDEV library to version 2.3.1.1 or later immediately to resolve the vulnerable code path.
Proactive Monitoring: Security teams should monitor system logs for unusual crashes or memory-related errors originating from applications that utilize the iccDEV library.
Compensating Controls: Implement strict input validation or sandboxing for any software that parses untrusted ICC profiles to prevent the processing of malicious color data.
Exploitation status
Public Exploit Available: No (exploit_available: false)
Analyst recommendation
Given the high CVSS severity and the potential for memory corruption, organizations utilizing iccDEV must prioritize upgrading to version 2.3.1.1. Applying this patch is the only definitive way to mitigate the risk of exploitation. Please ensure that all downstream dependencies are updated and verified to prevent continued exposure through legacy library versions.