What’s Vulnerable › Vulnerabilities

CVE-2017-9938

• Severity: high (CVSS 7.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2017-08-08 · updated 2026-06-17
• Weakness: CWE-787

Description

A vulnerability was discovered in Siemens SIMATIC Logon (All versions before V1.6) that could allow specially crafted packets sent to the SIMATIC Logon Remote Access service on port 16389/tcp to cause a Denial-of-Service condition. The service restarts automatically.

Affected products

• SIMATIC Logon All versions < V1.5 SP3 Update 2: through 1.5

References

• http://www.securityfocus.com/bid/99539
• https://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-804859.pdf
• https://www.tenable.com/security/research/tra-2017-34
• http://www.securityfocus.com/bid/99539
• https://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-804859.pdf
• https://www.tenable.com/security/research/tra-2017-34

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