Auth bypass in Siemens Simatic Pcs 7
CVE-2020-10048
A vulnerability has been identified in SIMATIC PCS 7 (All versions), SIMATIC WinCC (All versions < V7.5 SP2). Due to an insecure password verification process, an attacker could bypass the password protection set on protected files, thus being granted access to the protected content, circumventing authentication.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.003 (25.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 26th percentile — 25.6% 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 Pcs 7 — versions All versions
- Siemens Simatic Pcs 7
- Siemens Simatic Wincc — versions All versions < V7.5 SP2
- Siemens Simatic Wincc — versions 7.5
Weakness classification (CWE)
References
- cert-portal.siemens.com/productcert/pdf/ssa-944678.pdf (Vendor Advisory)
Frequently asked questions
- What is CVE-2020-10048?
- CVE-2020-10048 is a medium-severity vulnerability in Siemens Simatic Pcs 7, classified under Authentication Bypass Using an Alternate Path or Channel. CVSS score: 5.5/10. Published 2021-02-09.
- How severe is CVE-2020-10048?
- Medium severity. CVSS v3 base score is 5.5 out of 10.