Possible FortiWeb Path-Traversal Authentication Bypass Exploitation CVE-2025-64446

ATT&CK techniques

Initial Access → Defense Evasion

Recon
Resource Dev
Initial Access
- T1078.001Default Accounts
- T1190Exploit Public-Facing Application
Execution
Persistence
- T1078.001Default Accounts
Priv Esc
- T1078.001Default Accounts
Defense Evasion
- T1078.001Default Accounts
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects inbound POST requests containing a path-traversal sequence that reaches the FortiWeb fwbcgi CGI endpoint through the cmdb admin API, matching the authentication-bypass exploitation of CVE-2025-64446 observed in the wild. Successful exploitation lets an unauthenticated attacker create administrative accounts and run privileged commands on the appliance.

Reporting behind it

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Possible FortiWeb Path-Traversal Authentication Bypass Exploitation CVE-2025-64446

Pivot detection · T1190 · 9 related

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.

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