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CVE-2013-3959

4.0 · MEDIUM

The Web Navigator in Siemens WinCC before 7.2 Update 1, as used in SIMATIC PCS7 8.0 SP1 and earlier and other products, exhibits different behavior for NetBIOS user names depending on whether the u…

Published Jun 14, 2013siemensCWE-200EPSS 1.33%

Overview

CVE-2013-3959 is a medium-severity vulnerability affecting siemens simatic_pcs7. It was published on June 14, 2013 and has a CVSS 2.0 base score of 4.0 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 4.0, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

The Web Navigator in Siemens WinCC before 7.2 Update 1, as used in SIMATIC PCS7 8.0 SP1 and earlier and other products, exhibits different behavior for NetBIOS user names depending on whether the user account exists, which allows remote authenticated users to enumerate account names via crafted URL parameters.

Remediation

Check the references section for vendor advisories and patches from siemens. Update simatic_pcs7 to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
siemenssimatic_pcs70Affected
siemenswincc0Affected

References

Refwww.siemens.com/corporate-technology/pool/de/forschungsfelder/siemens_security_advisory_ssa-345843.pdfRefwww.siemens.com/corporate-technology/pool/de/forschungsfelder/siemens_security_advisory_ssa-345843.pdf

How CyberStrike helps

Frequently asked questions

What is CVE-2013-3959?

CVE-2013-3959 is a medium-severity vulnerability affecting siemens simatic_pcs7. It was published on June 14, 2013 and has a CVSS 2.0 base score of 4.0 (MEDIUM).

How severe is CVE-2013-3959?

This vulnerability has a CVSS 2.0 base score of 4.0, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2013-3959?

Check the references section for vendor advisories and patches from siemens. Update simatic_pcs7 to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2013-3959?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2013-3959 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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