CVE-2025-67652: Privilege Escalation Vulnerability

CVE-2025-67652 Overview

CVE-2025-67652 is a weak cryptography vulnerability affecting industrial control system (ICS) project files where credentials are stored without robust encryption or secure handling mechanisms. An attacker with access to the project file could use the exposed credentials to impersonate users, escalate privileges, or gain unauthorized access to systems and services. The absence of robust encryption or secure handling mechanisms increases the likelihood of exploitation, leaving sensitive information more vulnerable.

Critical Impact

Exposed credentials in project files can enable attackers to impersonate legitimate users, escalate privileges within industrial control environments, and gain unauthorized access to critical systems and services.

Affected Products

• Industrial Control System project files (specific vendor/product not disclosed in advisory)

Discovery Timeline

• 2026-01-22 - CVE CVE-2025-67652 published to NVD
• 2026-01-22 - Last updated in NVD database

Technical Details for CVE-2025-67652

Vulnerability Analysis

This vulnerability stems from CWE-261 (Weak Encoding for Password), indicating that credentials stored within project files are not adequately protected through encryption. The weakness allows local attackers with low privileges to extract sensitive authentication material from project files without significant effort.

The attack requires local access to the system containing the project files, making it particularly concerning in environments where multiple users or contractors may have access to engineering workstations. Once credentials are extracted, an attacker could leverage them to move laterally within the industrial control network, potentially compromising critical operational technology infrastructure.

Root Cause

The root cause of this vulnerability is the weak encoding or lack of robust encryption for passwords stored in project files. Rather than implementing industry-standard cryptographic protections for credential storage, the affected system uses insufficient encoding mechanisms that fail to adequately protect sensitive authentication data. This design flaw violates secure development practices that mandate strong encryption for stored credentials.

Attack Vector

The attack vector is local, requiring an attacker to have access to the file system where project files are stored. The attack follows this general pattern:

1. Attacker gains access to the engineering workstation or file share containing project files
2. Attacker locates and extracts the project file containing credential information
3. Due to weak encoding, the attacker can reverse or decode the stored credentials
4. Extracted credentials are used to authenticate to ICS systems, impersonate users, or escalate privileges

The vulnerability does not require user interaction and can be exploited by users with low-level privileges who have read access to project files.

Detection Methods for CVE-2025-67652

Indicators of Compromise

• Unusual access patterns to project files from unexpected user accounts or systems
• Authentication events using service accounts or credentials typically associated with engineering workstations from different network segments
• File access events showing bulk reading or copying of project files
• Failed authentication attempts followed by successful logins using extracted credentials

Detection Strategies

• Implement file integrity monitoring (FIM) on directories containing ICS project files to detect unauthorized access or modifications
• Configure audit logging for all access to project files and engineering workstation file systems
• Monitor for credential usage anomalies where engineering credentials are used from non-standard locations or times
• Deploy endpoint detection and response (EDR) solutions to identify suspicious file access patterns on engineering workstations

Monitoring Recommendations

• Enable detailed file access auditing on systems storing project files
• Implement network segmentation monitoring to detect credential reuse across security zones
• Establish baseline authentication patterns for engineering accounts and alert on deviations
• Monitor for data exfiltration indicators from engineering workstations

How to Mitigate CVE-2025-67652

Immediate Actions Required

• Restrict file system access to project files using role-based access controls
• Audit all user accounts with access to project files and remove unnecessary permissions
• Rotate credentials that may have been stored in project files
• Review system logs for evidence of unauthorized project file access

Patch Information

Refer to the CISA ICS Advisory for vendor-specific patch information and remediation guidance. Organizations should contact their ICS vendor directly for updated software versions that implement proper credential encryption in project files.

Additional technical details are available in the GitHub CSAF Resource.

Workarounds

• Store project files on encrypted volumes or in secure file storage systems with strong access controls
• Implement network segmentation to isolate engineering workstations from general-purpose networks
• Use privileged access management (PAM) solutions to vault and rotate credentials used in ICS environments
• Consider removing stored credentials from project files and implementing just-in-time credential provisioning where architecturally feasible

# Example: Restrict project file access on Linux systems
chmod 600 /path/to/project/files/*.proj
chown ics_engineer:ics_group /path/to/project/files/*.proj
# Enable audit logging for project file access
auditctl -w /path/to/project/files/ -p rwa -k ics_project_access