CVE-2026-25583: iccDEV Buffer Overflow Vulnerability

CVE-2026-25583 Overview

CVE-2026-25583 is a heap buffer overflow vulnerability affecting iccDEV, a set of libraries and tools that allow for the interaction, manipulation, and application of ICC color management profiles. Prior to version 2.3.1.3, a heap buffer overflow vulnerability exists in CIccFileIO::Read8() when processing malformed ICC profile files via an unchecked fread operation. This vulnerability can be exploited by an attacker who convinces a user to open a specially crafted ICC profile file, potentially leading to arbitrary code execution or application crashes.

Critical Impact

Successful exploitation of this heap buffer overflow could allow attackers to execute arbitrary code in the context of the affected application, compromise system integrity, or cause denial of service through application crashes.

Affected Products

• iccDEV versions prior to 2.3.1.3
• Applications and systems utilizing the iccDEV libraries for ICC profile processing
• Software integrating CIccFileIO class for file I/O operations

Discovery Timeline

• 2026-02-04 - CVE-2026-25583 published to NVD
• 2026-02-05 - Last updated in NVD database

Technical Details for CVE-2026-25583

Vulnerability Analysis

This vulnerability is classified under CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer). The flaw resides in the CIccFileIO::Read8() function within the iccDEV library, which fails to perform adequate bounds checking when reading data from ICC profile files. When a malformed ICC profile with insufficient or corrupted data is processed, the fread operation can write beyond the allocated heap buffer boundaries.

The attack requires local access and user interaction, as the victim must open a malicious ICC profile file. However, once triggered, the vulnerability can lead to complete compromise of confidentiality, integrity, and availability of the affected system.

Root Cause

The root cause of this vulnerability is the absence of proper size validation before performing file read operations in the CIccFileIO::Read8() function. The original code did not verify that the input file contained sufficient data to fill the expected buffer, allowing the fread operation to process malformed files without boundary checks. This oversight enables heap memory corruption when parsing specially crafted ICC profile files.

Attack Vector

The attack vector is local, requiring an attacker to deliver a malicious ICC profile file to a victim. Attack scenarios include:

1. Email attachments containing crafted ICC profile files
2. Malicious files distributed via file sharing or download sites
3. Exploitation through applications that automatically process ICC profiles from untrusted sources
4. Supply chain attacks where legitimate ICC profiles are replaced with malicious versions

When a user or application processes the malicious file, the heap buffer overflow is triggered, potentially allowing the attacker to overwrite critical heap metadata or adjacent memory structures, leading to code execution.

// Security patch for CIccFileIO::Read8() - Size validation fix
// Source: https://github.com/InternationalColorConsortium/iccDEV/commit/8a6df2d8dac1e971a18be66fa36e3a0d6584f919

     m_szText[0] = '\0';
     return false;
   }
+  
+  size_t minimumSize = sizeof(icTagTypeSignature)
+                    + sizeof(icUInt32Number)
+                    + sizeof(icUChar16);
+  
+  if (size < minimumSize)
+    return false;
 
   if (!pIO->Read32(&sig))
     return false;

The patch introduces a minimum size check before processing, ensuring that the input file contains at least enough data for the expected tag type signature, unsigned 32-bit number, and unsigned 16-bit character. If the file size is insufficient, the function returns false before any potentially dangerous read operations occur.

Detection Methods for CVE-2026-25583

Indicators of Compromise

• Unexpected application crashes when processing ICC profile files
• Memory corruption errors or access violations in applications using iccDEV libraries
• Unusual process behavior or child process spawning after opening ICC profile files
• System logs indicating heap corruption or memory allocation failures in ICC processing components

Detection Strategies

• Monitor for applications loading ICC profiles from untrusted sources or unusual locations
• Implement file integrity monitoring for ICC profile files in critical directories
• Deploy endpoint detection rules to identify heap overflow exploitation patterns
• Analyze crash dumps for signatures consistent with heap buffer overflow attacks

Monitoring Recommendations

• Enable application crash reporting and analyze crashes involving iccDEV library functions
• Configure security tools to alert on suspicious ICC profile file operations
• Monitor network traffic for downloads of ICC profile files from untrusted domains
• Implement behavioral analysis for applications that process ICC color management profiles

How to Mitigate CVE-2026-25583

Immediate Actions Required

• Upgrade iccDEV to version 2.3.1.3 or later immediately
• Audit systems for applications using vulnerable versions of the iccDEV library
• Restrict processing of ICC profile files from untrusted sources until patching is complete
• Implement application whitelisting to control which applications can process ICC profiles

Patch Information

The vulnerability has been patched in iccDEV version 2.3.1.3. The fix adds proper size validation before read operations, preventing the heap buffer overflow condition. Organizations should update to the patched version as the primary remediation. Additional details are available through the GitHub Security Advisory GHSA-5ffg-r52h-fgw3, the GitHub Commit Details, and the GitHub Pull Request.

Workarounds

• Avoid opening ICC profile files from untrusted or unknown sources until patching is possible
• Implement strict input validation at the application level before passing files to iccDEV libraries
• Deploy sandboxing or isolation for applications that must process untrusted ICC profiles
• Consider disabling ICC profile processing functionality in non-essential applications as a temporary measure

# Configuration example: Verify iccDEV version
# Check installed version of iccDEV library
pkg-config --modversion iccDEV

# If vulnerable version detected, update to patched version
git clone https://github.com/InternationalColorConsortium/iccDEV.git
cd iccDEV
git checkout v2.3.1.3
mkdir build && cd build
cmake ..
make && sudo make install