CVE-2025-55109 Overview
An authentication bypass vulnerability has been identified in BMC Control-M/Agent versions 9.0.18 through 9.0.20, as well as potentially earlier unsupported versions. This vulnerability allows remote attackers to bypass certificate-based authentication when the system is configured with an empty or default kdb keystore, or when using a default PKCS#12 keystore. The flaw enables attackers with access to signed third-party or demo certificates to authenticate to the Control-M/Agent without requiring a certificate signed by the organization's certificate authority.
The vulnerability stems from the presence of hardcoded certificates within the Control-M/Agent that are trusted as fallback mechanisms when empty kdb keystores are in use. Additionally, default kdb and PKCS#12 keystores contain trusted third-party certificates from external recognized CAs and default self-signed demo certificates, which are improperly trusted for client authentication purposes.
Critical Impact
Remote attackers can bypass authentication controls on Control-M/Agent systems, potentially gaining unauthorized access to enterprise workload automation infrastructure without proper certificate validation.
Affected Products
- BMC Control-M/Agent versions 9.0.18 to 9.0.20
- Potentially earlier unsupported versions of BMC Control-M/Agent
- Systems configured with empty or default kdb keystores
- Systems configured with default PKCS#12 keystores
Discovery Timeline
- September 16, 2025 - CVE-2025-55109 published to NVD
- October 10, 2025 - Last updated in NVD database
Technical Details for CVE-2025-55109
Vulnerability Analysis
This authentication bypass vulnerability (CWE-295: Improper Certificate Validation) affects the certificate validation mechanism in BMC Control-M/Agent. The vulnerability allows attackers to circumvent the intended security model where client authentication should require certificates signed by the organization's trusted certificate authority.
The core issue lies in the trust chain configuration within Control-M/Agent. When an empty kdb keystore is deployed, the agent falls back to trusting hardcoded certificates embedded in the application. While these hardcoded certificates are now expired, the more pressing concern is that both default kdb and PKCS#12 keystores ship with pre-configured trusted certificates from external certificate authorities and self-signed demo certificates.
This misconfiguration creates multiple attack paths. An attacker who obtains a certificate from any of the pre-trusted external CAs, or who can acquire one of the default demo certificates, can present this certificate during the client authentication handshake. The Control-M/Agent will accept this certificate as valid, bypassing the requirement for organizational CA-signed credentials.
Root Cause
The root cause of CVE-2025-55109 is improper certificate validation combined with insecure default configurations. The Control-M/Agent was designed with fallback certificate trust mechanisms intended for initial deployment and testing scenarios, but these mechanisms were not adequately secured for production environments. The presence of hardcoded certificates and pre-trusted third-party CA certificates in default keystores violates the principle of least privilege and creates an implicit trust relationship with entities outside the organization's control.
Attack Vector
The attack vector for this vulnerability is network-based, requiring no user interaction or prior authentication. An attacker must have network access to the Control-M/Agent service and possess a valid certificate from one of the pre-trusted certificate authorities or demo certificates. The attack complexity is considered higher due to the requirement for specific certificate material, but the impact is severe as successful exploitation grants full authentication bypass.
The exploitation process involves:
- Identifying a Control-M/Agent system running vulnerable versions (9.0.18 through 9.0.20)
- Determining that the target uses default or empty keystore configurations
- Obtaining a certificate trusted by the default keystore (third-party CA certificate or demo certificate)
- Initiating a client authentication handshake presenting the attacker-controlled certificate
- Gaining authenticated access to the Control-M/Agent without organizational CA validation
Detection Methods for CVE-2025-55109
Indicators of Compromise
- Unexpected authentication events from certificates not issued by the organization's CA
- Authentication logs showing successful connections from external or demo certificates
- Connection attempts to Control-M/Agent from unusual source IP addresses
- Certificate subject names in authentication logs that don't match expected organizational naming conventions
- Multiple authentication attempts using various certificate types in short succession
Detection Strategies
- Monitor Control-M/Agent authentication logs for certificates with unexpected issuer distinguished names
- Implement alerting for any authentication events where the certificate issuer differs from the organizational CA
- Deploy network monitoring to detect connections to Control-M/Agent ports from unauthorized network segments
- Review keystore configurations across all Control-M/Agent deployments to identify default or empty keystores
- Correlate authentication events with asset inventories to identify unauthorized system access
Monitoring Recommendations
- Enable detailed certificate logging on all Control-M/Agent instances to capture full certificate chain information
- Configure SIEM rules to alert on authentication bypass patterns specific to certificate validation failures
- Implement regular audits of Control-M/Agent keystore configurations to ensure default certificates are removed
- Monitor for changes to keystore files that could indicate attacker persistence mechanisms
How to Mitigate CVE-2025-55109
Immediate Actions Required
- Upgrade Control-M/Agent to a supported version immediately, as versions 9.0.18 through 9.0.20 are out of support
- Replace all default kdb and PKCS#12 keystores with properly configured keystores containing only organizational CA certificates
- Remove all hardcoded, third-party, and demo certificates from trust stores
- Implement network segmentation to restrict access to Control-M/Agent services
- Review authentication logs for evidence of exploitation prior to remediation
Patch Information
BMC has published security guidance for this vulnerability. Organizations should consult the official BMC Knowledge Articles for detailed remediation instructions:
As the affected versions are out of support, organizations must migrate to a supported Control-M/Agent version and implement proper keystore configurations to fully remediate this vulnerability.
Workarounds
- Replace default keystores with custom keystores containing only certificates signed by the organization's certificate authority
- Configure Control-M/Agent to reject any certificates not explicitly signed by the organizational CA
- Implement network-level access controls to restrict which systems can connect to Control-M/Agent services
- Deploy a Web Application Firewall (WAF) or network IPS with rules to monitor and alert on anomalous certificate usage patterns
# Configuration example
# Verify current keystore configuration
# Check for default or empty keystores in Control-M/Agent installation
ls -la $CTMAGENT_HOME/ctm/data/SSL/
# Backup existing keystore before replacement
cp $CTMAGENT_HOME/ctm/data/SSL/ctm.kdb $CTMAGENT_HOME/ctm/data/SSL/ctm.kdb.backup
# Review trusted certificates in current keystore
# Remove all third-party and demo certificates
# Import only organizational CA certificates
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
