Auth bypass in Siemens Siclock Tc100
CVE-2018-4856
A vulnerability has been identified in SICLOCK TC100 (All versions) and SICLOCK TC400 (All versions). An attacker with administrative access to the device's management interface could lock out legitimate users. Manual interaction is required to restore the access of legitimate users.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.013 (68.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 69th percentile — 68.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: -0.000
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-2018-4856?
- CVE-2018-4856 is a medium-severity vulnerability in Siemens Siclock Tc100, classified under Improper Authentication. CVSS score: 4.9/10. Published 2018-07-03.
- How severe is CVE-2018-4856?
- Medium severity. CVSS v3 base score is 4.9 out of 10.