CWE
264
Advisory Published
Updated

CVE-2011-4509

First published: Fri Feb 03 2012(Updated: )

The HMI web server 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 has an improperly selected default password for the administrator account, which makes it easier for remote attackers to obtain access via a brute-force approach involving many HTTP requests.

Credit: cret@cert.org

Affected SoftwareAffected VersionHow to fix
Siemens SIMATIC WinCC flexible 2008=2004
Siemens SIMATIC WinCC flexible 2008=2008
Siemens SIMATIC WinCC flexible 2008=2007
Siemens SIMATIC WinCC flexible 2008=2005
Siemens WinCC=v11
Siemens SIMATIC HMI Panels=tp
Siemens SIMATIC HMI Panels=op
Siemens SIMATIC HMI Panels=mobile_panels
Siemens SIMATIC HMI Panels=comfort_panels
Siemens SIMATIC HMI Panels=mp
Siemens SIMATIC WinCC Runtime Advanced=v11
Siemens SIMATIC WinCC flexible Runtime

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Frequently Asked Questions

  • What is the severity of CVE-2011-4509?

    CVE-2011-4509 has been classified as a critical vulnerability due to the presence of an improperly selected default password for the administrator account.

  • How do I fix CVE-2011-4509?

    To mitigate CVE-2011-4509, change the default administrator password immediately on affected Siemens WinCC products.

  • Which Siemens products are affected by CVE-2011-4509?

    CVE-2011-4509 affects Siemens WinCC flexible 2004, 2005, 2007, 2008, WinCC V11, and various SIMATIC HMI panels.

  • What could happen if CVE-2011-4509 is exploited?

    Exploitation of CVE-2011-4509 could allow attackers to gain unauthorized access to critical control systems.

  • Is there a patch for CVE-2011-4509 available from Siemens?

    Siemens recommends reviewing their security advisories for guidance on remediation measures concerning CVE-2011-4509.

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