CVE-2018-4853 — A vulnerability has been identified in SICLOCK TC100 (All versions) and SICLOCK

A vulnerability has been identified in SICLOCK TC100 (All versions) and SICLOCK TC400 (All versions). An attacker with network access to port 69/udp could modify the firmware of the device.

01What is this vulnerability?

A vulnerability has been identified in SICLOCK TC100 (All versions) and SICLOCK TC400 (All versions). An attacker with network access to port 69/udp could modify the firmware of the device.

02Affected products

Vendor	Product	Versions
Siemens AG	SICLOCK TC100, SICLOCK TC400	SICLOCK TC100 : All versions, SICLOCK TC400 : All versions

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2018-07-03T14:00:00.000Z
• Last modified: 2024-09-16T17:32:52.281Z

09References

• www.securityfocus.com — http://www.securityfocus.com/bid/104672
• cert-portal.siemens.com — https://cert-portal.siemens.com/productcert/pdf/ssa-197012.pdf