CVE-2026-24406: iccDEV Buffer Overflow Vulnerability

CVE-2026-24406 Overview

CVE-2026-24406 is a Heap Buffer Overflow vulnerability affecting iccDEV, a collection of libraries and tools for interacting with, manipulating, and applying ICC color management profiles. The vulnerability exists in the CIccTagNamedColor2::SetSize() function and occurs when user-controllable input is unsafely incorporated into ICC profile data or other structured binary blobs.

Critical Impact

Successful exploitation may allow an attacker to perform Denial of Service (DoS), manipulate data, bypass application logic, and achieve Remote Code Execution.

Affected Products

• iccDEV versions 2.3.1.1 and below
• Applications integrating iccDEV libraries for ICC profile processing
• Systems processing untrusted ICC color management profiles

Discovery Timeline

• 2026-01-24 - CVE-2026-24406 published to NVD
• 2026-01-26 - Last updated in NVD database

Technical Details for CVE-2026-24406

Vulnerability Analysis

This vulnerability represents a classic Heap Buffer Overflow condition within the ICC color profile parsing functionality. The CIccTagNamedColor2::SetSize() function fails to properly validate the size parameter before allocating and writing to heap memory. When processing maliciously crafted ICC profile data, the function can be tricked into writing beyond the bounds of allocated heap buffers.

The root cause stems from Improper Input Validation (CWE-20), where user-supplied data influencing memory allocation sizes is not adequately sanitized. This allows attackers to supply specially crafted ICC profiles that trigger memory corruption when processed by vulnerable applications.

Root Cause

The vulnerability is classified under CWE-20 (Improper Input Validation). The SetSize() function accepts external input that directly influences memory operations without sufficient bounds checking. When the function receives an oversized or maliciously calculated size value from ICC profile data, it fails to validate this input against safe boundaries, resulting in heap memory corruption.

Attack Vector

The attack is network-accessible and requires user interaction, typically through opening a malicious ICC profile file or visiting a website that serves malicious color profile data. An attacker would craft a malicious ICC profile with carefully constructed size values that, when parsed by the CIccTagNamedColor2::SetSize() function, cause a heap buffer overflow.

The exploitation flow involves:

1. Attacker creates a malicious ICC color profile with crafted size parameters
2. Victim opens or processes the malicious profile through an application using vulnerable iccDEV versions
3. The CIccTagNamedColor2::SetSize() function processes the malicious input
4. Heap buffer overflow occurs, potentially allowing arbitrary code execution

Detailed technical information about the vulnerability can be found in the GitHub Security Advisory GHSA-h9h3-45cm-j95f and GitHub Issue #480.

Detection Methods for CVE-2026-24406

Indicators of Compromise

• Unexpected application crashes when processing ICC profile files
• Memory access violations or segmentation faults in applications using iccDEV libraries
• Suspicious ICC profile files with abnormal size values in NamedColor2 tags
• Unusual heap memory patterns or corruption in process memory dumps

Detection Strategies

• Monitor for crashes in applications that process ICC color profiles, particularly those linked against iccDEV libraries
• Implement file integrity monitoring for ICC profile files in critical directories
• Deploy memory protection tools (ASLR, DEP, heap protections) to detect exploitation attempts
• Use application whitelisting to control which applications can process ICC profiles

Monitoring Recommendations

• Enable crash dump collection and analysis for applications using iccDEV
• Monitor system logs for repeated application failures involving color management functions
• Implement network monitoring for unusual ICC profile downloads from external sources
• Deploy endpoint detection solutions capable of identifying heap spray and overflow exploitation techniques

How to Mitigate CVE-2026-24406

Immediate Actions Required

• Upgrade iccDEV to version 2.3.1.2 or later immediately
• Audit all applications in your environment that depend on iccDEV libraries
• Restrict processing of ICC profiles from untrusted sources until patched
• Enable additional memory protections on systems where immediate patching is not possible

Patch Information

The vulnerability has been fixed in iccDEV version 2.3.1.2. The fix is available via the GitHub commit 90c71cba2c563b1f5dc84197f827540d1baaea67. Organizations should update their iccDEV installations and rebuild any dependent applications against the patched library version.

Workarounds

• If immediate patching is not possible, restrict ICC profile processing to trusted sources only
• Implement application sandboxing for processes that handle ICC color profiles
• Deploy exploit mitigation technologies such as Control Flow Guard (CFG) and Address Space Layout Randomization (ASLR)
• Consider temporarily disabling ICC profile processing functionality in affected applications until patched

# Verify iccDEV version and update
# Check current version
pkg-config --modversion iccDEV

# Update to patched version 2.3.1.2 or later
# Build from source with the security fix
git clone https://github.com/InternationalColorConsortium/iccDEV.git
cd iccDEV
git checkout v2.3.1.2
mkdir build && cd build
cmake ..
make && sudo make install