Unauthenticated Access Vulnerability in Siemens WinCC Flexible and SIMATIC HMI Panels

CVE-2011-4514 · HIGH Severity

AV:N/AC:L/AU:N/C:C/I:C/A:C

The TELNET daemon in Siemens WinCC flexible 2004, 2005, 2007, and 2008; WinCC V11 (aka TIA portal); the TP, OP, MP, Comfort Panels, and Mobile Panels SIMATIC HMI panels; WinCC V11 Runtime Advanced; and WinCC flexible Runtime does not perform authentication, which makes it easier for remote attackers to obtain access via a TCP session.

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