CVE-2018-4851

Name: CVE-2018-4851
Creator: NVD / NIST
Published: 2018-07-03T14:29:00.227+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.46%

Last modified Jun 17, 2026

CVE-2018-4851 is a vulnerability of currently unknown severity. A vulnerability has been identified in SICLOCK TC100 (All versions) and SICLOCK TC400 (All versions). An attacker with network access to the device could cause a Denial-of-Service condition by sending certain packets to the device, causing potential reboots of the device. EPSS estimates a 1.46% chance of exploitation in the next 30 days.

Description

A vulnerability has been identified in SICLOCK TC100 (All versions) and SICLOCK TC400 (All versions). An attacker with network access to the device could cause a Denial-of-Service condition by sending certain packets to the device, causing potential reboots of the device. The core functionality of the device could be impacted. The time serving functionality recovers when time synchronization with GPS devices or other NTP servers are completed.

Metrics

EPSS Probability

1.46%

70.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Siemens	Siclock Tc400 Firmware	All versions
Siemens	Siclock Tc100 Firmware	All versions

References

http://www.securityfocus.com/bid/104672Third Party Advisory, VDB Entry
https://cert-portal.siemens.com/productcert/pdf/ssa-197012.pdfMitigation, Vendor Advisory
http://www.securityfocus.com/bid/104672Third Party Advisory, VDB Entry
https://cert-portal.siemens.com/productcert/pdf/ssa-197012.pdfMitigation, Vendor Advisory

Timeline

Published: Jul 3, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-4851?

How severe is CVE-2018-4851?

Severity scoring for CVE-2018-4851 is pending analysis. The EPSS model estimates a 1.46% probability of exploitation in the next 30 days.

How do I fix CVE-2018-4851?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-4851?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST