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Fencer Intel
high 8.2

CVE-2018-4851 json

A vulnerability has been identified in SICLOCK TC100 (All versions) and SICLOCK TC400 (All versions).

published 8y ago modified 4mo ago also EUVD-2018-16637

cvss
8.2
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.4%
EPSS 1.4% chance of exploitation in 30 days, percentile 72%
public exploits
0
none known

Summary

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.

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Exploit prediction

1.40% chance of exploitation in the next 30 days, higher than 72% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.0 8.2 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
NVD 2.0 8.5 AV:N/AC:L/Au:N/C:N/I:P/A:C

Affected products

  • Siemens AG SICLOCK TC100, SICLOCK TC400

Classification

Weakness
  • CWE-399 Resource Management Errors
  • CWE-20 Improper Input Validation

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.