ICSA-11-356-01: Siemens Simatic HMI Authentication Vulnerabilities
CISA advisory · released 2011-09-24
Source record Collected from CISA's CSAF advisory feed
- Distribution label in the document: TLP:WHITE
- Revision 2, 2025-06-05 (final)
Products, as the advisory lists them
| Vendor | Product | Version |
|---|---|---|
| Siemens | SIMATIC WinCC flexible RT | 2004|2005|2005|SP1|2007|2008|2008|SP1|2008|SP2 |
| Siemens | SIMATIC WinCC Runtime Advanced | 11|11|SP1|11|SP2 |
| Siemens | Multiple SIMATIC Panels | TP_OP_MP_Mobile_and_Comfort |
DeSpy has not checked any unit, hardware revision or firmware.
Vulnerabilities in this advisory
- CVE-2011-4509 · CWE-1392
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.
- CVE-2011-4508 · CWE-287
The HMI web server in Siemens WinCC flexible 2004, 2005, 2007, and 2008 before SP3; WinCC V11 (aka TIA portal) before SP2 Update 1; the TP, OP, MP, Comfort Panels, and Mobile Panels SIMATIC HMI panels; WinCC V11 Runtime Advanced; and WinCC flexible Runtime generates predictable authentication tokens for cookies, which makes it easier for remote attackers to bypass authentication via a crafted cookie.
The advisory's legal notice
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Sources
DeSpy's copy of this version is dated 2026-09-28.
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