Skip to content
Fencer Intel
medium 4.3

CVE-2012-3034 json

WebNavigator in Siemens WinCC 7.0 SP3 and earlier, as used in SIMATIC PCS7 and other products, allows remote attackers to discover a userna…

published 2012-09-18 14 y ago modified 2026-06-16 4 mo ago also EUVD-2012-3012

cvss
4.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.2%
EPSS 2.2% chance of exploitation in 30 days, percentile 82%
public exploits
0
none known

Summary

WebNavigator in Siemens WinCC 7.0 SP3 and earlier, as used in SIMATIC PCS7 and other products, allows remote attackers to discover a username and password via crafted parameters to unspecified methods in ActiveX controls.

Patch / fix

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-12-256-01 updated cvss 8.3

Siemens WinCC WebNavigator Multiple Vulnerabilities

  • Siemens WebNavigator component of WinCC <=7.0_SP3
    affected: mitigation “Siemens addresses these issues in a Siemens Security Advisory, SSA-864051. (https://cert-portal.siemens.com/productcert/pdf/ssa-864051.pdf)” cert-portal.siemens.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

Exploit prediction

2.16% chance of exploitation in the next 30 days, higher than 82% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:P/I:N/A:N

Classification

Weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.