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CVE-2016-3949

7.5 · HIGH

Siemens SIMATIC S7-300 Profinet-enabled CPU devices with firmware before 3.2.12 and SIMATIC S7-300 Profinet-disabled CPU devices with firmware before 3.3.12 allow remote attackers to cause a denial…

Published Jun 27, 2016CWE-399EPSS 4.49%

Overview

CVE-2016-3949 is a high-severity vulnerability. It was published on June 27, 2016 and has a CVSS 3.0 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.0 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Siemens SIMATIC S7-300 Profinet-enabled CPU devices with firmware before 3.2.12 and SIMATIC S7-300 Profinet-disabled CPU devices with firmware before 3.3.12 allow remote attackers to cause a denial of service (defect-mode transition) via crafted (1) ISO-TSAP or (2) Profibus packets.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. 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.

References

Refwww.securitytracker.com/id/1036089Refwww.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-818183.pdfRefcert-portal.siemens.com/productcert/pdf/ssa-818183.pdfRefics-cert.us-cert.gov/advisories/ICSA-16-161-01Refwww.securitytracker.com/id/1036089Refwww.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-818183.pdfRefcert-portal.siemens.com/productcert/pdf/ssa-818183.pdfRefics-cert.us-cert.gov/advisories/ICSA-16-161-01

How CyberStrike helps

Frequently asked questions

What is CVE-2016-3949?

CVE-2016-3949 is a high-severity vulnerability. It was published on June 27, 2016 and has a CVSS 3.0 base score of 7.5 (HIGH).

How severe is CVE-2016-3949?

This vulnerability has a CVSS 3.0 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2016-3949?

Check the references section for vendor advisories, patches, and mitigation guidance. 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-2016-3949?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2016-3949 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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