Search/CVE-2017-9938
● CVE — High

CVE-2017-9938

VendorsiemensProductsimatic logonDiscoveredAug 8, 2017UpdatedMay 13, 2026

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.

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CVSS v3.1
7.5 HIGH
EPSS
2.90%
probability of exploitation in 30 days
CISA KEV
Not listed
no confirmed exploitation reported
News coverage
0
sources referencing this CVE
Related IOCs
0
seen in the same coverage
EPSS Trend
Aug 16, 2026 → Sep 23, 2026
● 0.00pp
2.90% → 2.90% over 9 tracked changes
CVSS v3.1 Detail
Attack VectorNETWORK
Attack ComplexityLOW
Privileges RequiredNONE
User InteractionNONE
ScopeUNCHANGED
ConfidentialityNONE
IntegrityNONE
AvailabilityHIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Connections
2 relationships
Timeline
disclosure → media coverage
Aug 8, 2017
Disclosure — published as a CVE record. · last revised by NVD May 13, 2026