CVE-2026-21691
📋 TL;DR
A type confusion vulnerability in iccDEV's CIccTag::IsTypeCompressed() function allows attackers to potentially execute arbitrary code or cause denial of service by processing malicious ICC color profiles. This affects all users of iccDEV library versions prior to 2.3.1.2 who handle ICC color profiles in their applications.
💻 Affected Systems
- iccDEV library
- Applications using iccDEV for ICC profile processing
📦 What is this software?
Iccdev by Color
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete system compromise if the vulnerable library processes attacker-controlled ICC profiles.
Likely Case
Application crash or denial of service when processing malformed ICC profiles.
If Mitigated
Limited impact if the library only processes trusted ICC profiles from controlled sources.
🎯 Exploit Status
Exploitation requires the application to process a malicious ICC profile, which could be delivered via various vectors.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.3.1.2
Vendor Advisory: https://github.com/InternationalColorConsortium/iccDEV/security/advisories/GHSA-c9q5-x498-jv92
Restart Required: Yes
Instructions:
1. Identify applications using iccDEV
2. Update iccDEV to version 2.3.1.2 or later
3. Recompile applications with updated library
4. Restart affected services
🧯 If You Can't Patch
- Restrict ICC profile processing to trusted sources only
- Implement input validation and sanitization for ICC profile data
🔍 How to Verify
Check if Vulnerable:
Check linked libraries for iccDEV version < 2.3.1.2 using ldd (Linux) or dependency walker toolsCheck Version:
Check library version in build configuration or use: strings /path/to/libiccdev.so | grep 'iccDEV version'Verify Fix Applied:
Verify iccDEV version is 2.3.1.2 or later in application dependencies📡 Detection & Monitoring
Log Indicators:
- Application crashes when processing ICC profiles
- Memory access violation errors in application logs
Network Indicators:
- Unexpected ICC profile uploads to applications
- Suspicious file transfers containing .icc/.icm files
SIEM Query:
source="application_logs" AND ("segmentation fault" OR "access violation" OR "type confusion") AND "icc"