Incorrect Access Control via activation token reuse on the password-reset endpoint allowing unauthorized password resets and full account takeover. Affected Product: Deutsche Telekom AG Telekom Account Management Portal, versions before 2025-10-27, fixed 2025-10-31.

Incorrect Access Control via missing 2FA rate-limiting allowing unlimited brute-force retries and full MFA bypass with no user interaction required. Affected Product: Deutsche Telekom AG Telekom Account Management Portal, versions before 2025-10-24, fixed 2025-11-03.

STRATO HiDrive Desktop Client 5.0.1.0 for Windows suffers from a SYSTEM privilege escalation vulnerability through the HiDriveMaintenanceService service. This service establishes a NetNamedPipe endpoint that allows applications to connect and call publicly exposed methods. An attacker can inject and execute code by hijacking the insecure communications with the service. This vulnerability also affects Telekom MagentaCLOUD through 5.7.0.0 and 1&1 Online Storage through 6.1.0.0.