Description
Stack-based buffer overflow in HmiLoad in the runtime loader 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, when Transfer Mode is enabled, allows remote attackers to execute arbitrary code via vectors related to Unicode strings.
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.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
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
- 77380 vdb-entry
- 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
- simatic-hmiload-bo(71449) vdb-entry
- http://www.us-cert.gov/control_systems/pdf/ICSA-12-030-01.pdf