CVE-2026-24409: iccDEV Library DoS Vulnerability

CVE-2026-24409 Overview

CVE-2026-24409 is a null pointer dereference and undefined behavior vulnerability in iccDEV, a library and toolset for interacting with, manipulating, and applying ICC color management profiles. The vulnerability exists in the CIccTagXmlFloatNum<>::ParseXml() function where user-controllable input is unsafely incorporated into ICC profile data or other structured binary blobs. Successful exploitation may allow an attacker to perform denial of service (DoS), manipulate data, bypass application logic, and potentially achieve code execution.

Critical Impact

Attackers can exploit malformed ICC profile data to crash applications using iccDEV, manipulate color profile processing, or potentially execute arbitrary code through memory corruption.

Affected Products

• iccDEV versions 2.3.1.1 and below
• Applications and systems utilizing the iccDEV library for ICC profile processing
• Color management workflows dependent on iccDEV XML parsing functionality

Discovery Timeline

• 2026-01-24 - CVE CVE-2026-24409 published to NVD
• 2026-01-26 - Last updated in NVD database

Technical Details for CVE-2026-24409

Vulnerability Analysis

This vulnerability arises from improper input validation (CWE-20) within the iccDEV library's XML parsing functionality. The CIccTagXmlFloatNum<>::ParseXml() function fails to properly validate user-supplied input before processing, leading to undefined behavior and null pointer dereference conditions. When processing malformed or specially crafted ICC profile data in XML format, the function can encounter unexpected states that result in dereferencing null pointers or triggering undefined behavior in the C++ template implementation.

The network-based attack vector allows remote attackers to deliver malicious ICC profiles through various channels, including web applications that process uploaded images, email attachments with embedded profiles, or any application that parses ICC color data from untrusted sources. While user interaction is required to open or process the malicious file, the attack complexity is low once a victim processes the crafted input.

Root Cause

The root cause of this vulnerability is insufficient input validation in the XML parsing logic of the CIccTagXmlFloatNum template class. The function does not adequately verify the integrity and expected format of XML elements before dereferencing pointers or performing operations that assume valid data structures. This allows attackers to craft malicious XML input that causes the parser to access memory through null or invalid pointers, resulting in crashes or potentially exploitable memory corruption conditions.

Attack Vector

The vulnerability is exploitable over the network when applications using iccDEV process untrusted ICC profiles. An attacker can craft a malicious ICC profile containing specially formatted XML data that triggers the vulnerable code path in CIccTagXmlFloatNum<>::ParseXml(). Common attack scenarios include:

The vulnerability manifests when parsing XML data containing float numeric values in ICC profiles. The parsing function fails to properly handle edge cases such as missing XML elements, malformed numeric data, or unexpected structural anomalies. When these conditions occur, the code attempts to dereference a null pointer or enters an undefined state that corrupts program execution. For technical implementation details, see the GitHub Security Advisory and the related commit fix.

Detection Methods for CVE-2026-24409

Indicators of Compromise

• Application crashes or unexpected terminations when processing ICC profile files
• Segmentation faults or access violations in processes using iccDEV library
• Unusual error logs related to XML parsing failures in color management components
• Abnormal memory consumption patterns during ICC profile processing

Detection Strategies

• Monitor for application crashes with stack traces pointing to CIccTagXmlFloatNum<>::ParseXml() or related iccDEV functions
• Implement file integrity monitoring for ICC profile files (.icc, .icm) in critical directories
• Deploy endpoint detection rules to identify attempts to exploit null pointer dereference conditions
• Use SentinelOne's behavioral AI to detect anomalous application behavior during file processing operations

Monitoring Recommendations

• Enable crash dump analysis for applications that process ICC color profiles
• Configure logging to capture XML parsing errors and exceptions in color management workflows
• Set up alerting for repeated parsing failures that may indicate exploitation attempts
• Monitor network traffic for suspicious ICC profile downloads or transfers from untrusted sources

How to Mitigate CVE-2026-24409

Immediate Actions Required

• Upgrade iccDEV to version 2.3.1.2 or later immediately
• Audit applications and systems to identify all instances of iccDEV library usage
• Implement input validation for ICC profile files before processing with iccDEV
• Restrict processing of ICC profiles from untrusted sources until patching is complete

Patch Information

The International Color Consortium has released version 2.3.1.2 of iccDEV which addresses this vulnerability. The fix implements proper null pointer checks and input validation in the CIccTagXmlFloatNum<>::ParseXml() function. Organizations should update to this version as soon as possible. The patch commit is available at the iccDEV GitHub repository. Additional details can be found in the GitHub Issue Report.

Workarounds

• Implement application-level sandboxing when processing ICC profiles from untrusted sources
• Deploy web application firewalls configured to inspect and sanitize uploaded ICC profile content
• Disable or restrict ICC profile processing functionality in non-essential applications until patched
• Use SentinelOne Singularity Platform for real-time protection against exploitation attempts

# Verify iccDEV version and update
# Check current version
iccDumpProfile --version

# Update to patched version via package manager or source
git clone https://github.com/InternationalColorConsortium/iccDEV.git
cd iccDEV
git checkout v2.3.1.2
cmake -B build && cmake --build build