Auth bypass in Siemens Simatic Wincc Sm\@rtclient
CVE-2017-6871
A vulnerability was discovered in Siemens SIMATIC WinCC Sm@rtClient for Android (All versions before V1.0.2.2) and SIMATIC WinCC Sm@rtClient for Android Lite (All versions before V1.0.2.2). An attacker with physical access to an unlocked mobile device, that has the affected app running, could bypass the app's authentication mechanism under certain conditions.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.0/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L.
EPSS exploit prediction
EPSS: 0.003 (22.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 22nd percentile — 22.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Siemens Simatic Wincc Sm\@rtclient
- Siemens Simatic Wincc Sm\@rtclient Lite
- Simatic Wincc Sm@rtclient For Android, Lite Android — versions SIMATIC WinCC Sm@rtClient for Android, SIMATIC WinCC Sm@rtClient Lite for Android
Weakness classification (CWE)
References
- www.securityfocus.com/bid/99582 (VDB Entry, Third Party Advisory, vdb-entry)
- www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-589378.pdf (Vendor Advisory)
Frequently asked questions
- What is CVE-2017-6871?
- CVE-2017-6871 is a medium-severity vulnerability in Siemens Simatic Wincc Sm\@rtclient, classified under Authentication Bypass Using an Alternate Path or Channel. CVSS score: 5.4/10. Published 2017-08-08.
- How severe is CVE-2017-6871?
- Medium severity. CVSS v3 base score is 5.4 out of 10.