Description
miniweb.exe in 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 does not properly handle URIs beginning with a 0xfa character, which allows remote attackers to read data from arbitrary memory locations or cause a denial of service (application crash) via a crafted POST request.
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Exploit-DB 1
- Siemens SIMATIC WinCC Flexible (Runtime) - Multiple Vulnerabilities EDB-18166 · dos · Nov 28, 2011 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 1
- ICSA-12-030-01A Siemens SIMATIC WinCC Vulnerabilities CISA ICS & IT advisories · Jun 9, 2025
References
- http://www.us-cert.gov/control_systems/pdf/ICS-ALERT-11-332-02.pdf
- http://www.us-cert.gov/control_systems/pdf/ICS-ALERT-11-332-02A.pdf
- http://www.siemens.com/corporate-technology/pool/de/forschungsfelder/siemens_security_advisory_ssa-345442.pdf
- 18166 exploit
- http://aluigi.org/adv/winccflex_1-adv.txt
- 77384 vdb-entry
- simatic-miniweb-dos(71453) vdb-entry
- http://www.us-cert.gov/control_systems/pdf/ICSA-12-030-01.pdf