CVE-2018-4851 describes a Denial-of-Service vulnerability affecting all versions of Siemens SICLOCK TC100 and TC400 devices. An unauthenticated attacker with network access can trigger device reboots and impact core functionality by sending specially crafted packets. This high-severity vulnerability (CVSS 8.2) has a low attack complexity and can lead to a complete loss of availability, though time synchronization eventually recovers. While no public exploit code or active exploitation has been observed, the vulnerability has garnered some community discussion and media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
Range not provided by sourceCPE matchmatch criteria | cpe:2.3:o:siemens:siclock_tc400_firmware:-:*:*:*:*:*:*:* | ||
Range not provided by sourceCPE matchmatch criteria | cpe:2.3:o:siemens:siclock_tc100_firmware:-:*:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.