Auth bypass in Siemens Siclock Tc100
CVE-2018-4852
A vulnerability has been identified in SICLOCK TC100 (All versions) and SICLOCK TC400 (All versions). An attacker with network access to the device could potentially circumvent the authentication mechanism if he/she is able to obtain certain knowledge specific to the attacked device.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.027 (85.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 85th percentile — 85.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.028 · newest: 0.027 · change: -0.001
Affected products
- Siemens Siclock Tc100
- Siemens Siclock Tc100 Firmware
- Siemens Siclock Tc400
- Siemens Siclock Tc400 Firmware
- Siemens Ag Siclock Tc100, Tc400 — versions SICLOCK TC100 : All versions, SICLOCK TC400 : All versions
Weakness classification (CWE)
References
- www.securityfocus.com/bid/104672 (VDB Entry, Third Party Advisory, vdb-entry)
- cert-portal.siemens.com/productcert/pdf/ssa-197012.pdf (Mitigation, Vendor Advisory)
Frequently asked questions
- What is CVE-2018-4852?
- CVE-2018-4852 is a critical-severity vulnerability in Siemens Siclock Tc100, classified under Authentication Bypass Using an Alternate Path or Channel. CVSS score: 9.8/10. Published 2018-07-03.
- How severe is CVE-2018-4852?
- Critical severity. CVSS v3 base score is 9.8 out of 10.