Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2013-3959

14
FAUCET Score

CVE-2013-3959 is an account enumeration vulnerability affecting the Web Navigator in Siemens WinCC before version 7.2 Update 1, including SIMATIC PCS7 8.0 SP1 and earlier. This vulnerability allows remote authenticated attackers to determine valid user accounts by observing differing responses to crafted URL parameters. With a CVSS score of 4.0, it is a low-severity issue, requiring authentication and having a partial impact on confidentiality (information disclosure) without affecting integrity or availability. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 8.0CPE matchmatch criteria
cpe:2.3:a:siemens:simatic_pcs7:*:sp1:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:a:siemens:simatic_pcs7:8.0:*:*:*:*:*:*:*
<= 7.2CPE matchmatch criteria
cpe:2.3:a:siemens:wincc:*:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:a:siemens:wincc:7.0:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:a:siemens:wincc:7.0:sp1:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.0MEDIUM

AV:N/AC:L/Au:S/C:P/I:N/A:N

Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
SINGLE
Exploitability Score
8.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.33%
Probability of exploitation in next 30 days
EPSS Percentile
68.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0133 is in the 82nd percentile among its peer group of 21,977 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

siemens.com / corporate-technology/pool/de/forschungsfelder/siemens_security_advisory_ssa-345843.pdf
Vendor Advisory