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CVE-2011-4879

HIGH · CVSS 8.5EPSS 12.1%EU EUVD

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.

Key facts

CVSS score
8.5 (v2.0)
Severity
HIGH
CVSS vector
AV:N/AC:L/Au:N/C:P/I:N/A:C
Weakness (CWE)
CWE-20
EPSS score
12.1% (96th percentile)
In CISA KEV
No
In EU EUVD
Yes (EUVD-2011-4796)
Published
February 3, 2012
NVD last modified
June 16, 2026
Status
Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2011-4796 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.

View on the EU Vulnerability Database

Affected products

  • siemens / simatic hmi panels
  • siemens / simatic hmi panels
  • siemens / simatic hmi panels
  • siemens / simatic hmi panels
  • siemens / simatic hmi panels
  • siemens / wincc
  • siemens / wincc
  • siemens / wincc
  • siemens / wincc flexible
  • siemens / wincc flexible
  • siemens / wincc flexible
  • siemens / wincc flexible
  • siemens / wincc flexible
  • siemens / wincc flexible
  • siemens / wincc flexible runtime
  • siemens / wincc runtime advanced

References

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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