CVE-2026-21685
📋 TL;DR
This vulnerability involves undefined behavior in the CIccTagLut16::Read() function of the iccDEV library, which could lead to memory corruption when processing ICC color profiles. It affects any application or system using iccDEV library versions before 2.3.1.2 for color management operations.
💻 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 an attacker can supply malicious ICC profiles to a vulnerable application.
Likely Case
Application crashes, denial of service, or potential information disclosure through memory corruption.
If Mitigated
Limited impact with proper input validation and sandboxing, though undefined behavior remains unpredictable.
🎯 Exploit Status
Exploitation requires crafting malicious ICC profiles and getting them processed by vulnerable applications. No public exploits are known.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.3.1.2
Vendor Advisory: https://github.com/InternationalColorConsortium/iccDEV/security/advisories/GHSA-c3xr-6687-5c8p
Restart Required: Yes
Instructions:
1. Update iccDEV library to version 2.3.1.2 or later. 2. Recompile any applications using iccDEV with the updated library. 3. Restart affected applications/services.
🔧 Temporary Workarounds
No known workarounds
allThe vendor advisory states no workarounds are available. Patching is required.
🧯 If You Can't Patch
- Restrict processing of untrusted ICC profiles by implementing strict input validation and file type restrictions.
- Isolate applications using iccDEV in sandboxed environments with limited privileges to contain potential exploitation.
🔍 How to Verify
Check if Vulnerable:
Check if applications link against iccDEV library versions <2.3.1.2 using ldd (Linux) or dependency walker tools.Check Version:
On Linux: `strings /path/to/libiccdev.so | grep -i version` or check package manager. On Windows: Check DLL properties or application dependencies.Verify Fix Applied:
Verify iccDEV library version is 2.3.1.2 or higher and applications have been recompiled with the updated library.📡 Detection & Monitoring
Log Indicators:
- Application crashes or abnormal termination when processing ICC profiles
- Memory access violation errors in application logs
Network Indicators:
- Unusual uploads of ICC profile files to web applications
- Network traffic containing ICC profile data to vulnerable services
SIEM Query:
Example: 'application:*icc* AND (error:segmentation OR error:access_violation)'