CVE-2026-21676: color iccdev Heap-based Buffer Overflow

Vulnerability summary

CVE-2026-21676 is a high (CVSS 8.8) Heap-based Buffer Overflow vulnerability in color iccdev. EPSS estimates a 0.41% chance of exploitation in the next 30 days, higher than 33.9% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 06-01-2026
   PublishedVulnerability first disclosed.
2. 06-01-2026
   Last modifiedVulnerability information updated.

Description

iccDEV provides a set of libraries and tools for working with ICC color management profiles. Versions 2.3.1 and below have a Heap-based Buffer Overflow in its CIccMBB::Validate function which checks tag data validity. This issue is fixed in version 2.3.1.1.

• CWE-122Heap-based Buffer OverflowA heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().