CVE-2011-4879 EXPLOIT
8.5
HIGH · CVSS 2.0 · EPSS 12.1% (pctl 96)
Patch early
A public exploit exists.
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.
Scoring
| CVSS | 8.5 (HIGH, v2.0) |
|---|---|
| Vector | AV:N/AC:L/Au:N/C:P/I:N/A:C |
| EPSS | 12.11% — more likely to be exploited than 96% of all CVEs |
| Weakness | CWE-20 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2012-02-03 |
| Last modified | 2026-06-16 |
Affected (5)
| Vendor | Product |
|---|---|
| siemens | simatic hmi panels |
| siemens | wincc |
| siemens | wincc flexible |
| siemens | wincc flexible runtime |
| siemens | wincc runtime advanced |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | Siemens SIMATIC WinCC Flexible (Runtime) - Multiple Vulnerabilities | 2011-11-28 |
References
- http://aluigi.org/adv/winccflex_1-adv.txt
- http://www.exploit-db.com/exploits/18166
- http://www.osvdb.org/77384
- http://www.siemens.com/corporate-technology/pool/de/forschungsfelder/siemens_security_advisory_ssa-345442.pdf
- 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.us-cert.gov/control_systems/pdf/ICSA-12-030-01.pdf
- https://exchange.xforce.ibmcloud.com/vulnerabilities/71453
- http://aluigi.org/adv/winccflex_1-adv.txt
- http://www.exploit-db.com/exploits/18166
- http://www.osvdb.org/77384
- http://www.siemens.com/corporate-technology/pool/de/forschungsfelder/siemens_security_advisory_ssa-345442.pdf
- 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.us-cert.gov/control_systems/pdf/ICSA-12-030-01.pdf
- https://exchange.xforce.ibmcloud.com/vulnerabilities/71453
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