Auth bypass in Siemens Simatic Pcs 7
CVE-2019-10922
A vulnerability has been identified in SIMATIC PCS 7 V8.0 and earlier (All versions), SIMATIC PCS 7 V8.1 and newer (All versions), SIMATIC WinCC V7.2 and earlier (All versions), SIMATIC WinCC V7.3 and newer (All versions). An attacker with network access to affected installations, which are configured without "Encrypted Communication", can execute arbitrary code. The security vulnerability could be exploited by an unauthenticated attacker with network access to the affected installation. No user interaction is required to exploit this security vulnerability. The vulnerability impacts confidentiality, integrity, and availability of the device. At the time of advisory publication no public exploitation of this security vulnerability was known.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.026 (85.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 85th percentile — 85.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.026 · newest: 0.026 · change: 0.000
Affected products
- Siemens Simatic Pcs 7
- Siemens Simatic Wincc
- Siemens Ag Simatic Pcs 7 V8.0 And Earlier — versions All versions
- Siemens Ag Simatic Pcs 7 V8.1 And Newer — versions All versions
- Siemens Ag Simatic Wincc V7.2 And Earlier — versions All versions
- Siemens Ag Simatic Wincc V7.3 And Newer — versions All versions
Weakness classification (CWE)
References
- cert-portal.siemens.com/productcert/pdf/ssa-705517.pdf (Mitigation, Vendor Advisory)
- www.securityfocus.com/bid/108398 (VDB Entry, Third Party Advisory, vdb-entry)
Frequently asked questions
- What is CVE-2019-10922?
- CVE-2019-10922 is a critical-severity vulnerability in Siemens Simatic Pcs 7, classified under Missing Authentication for Critical Function. CVSS score: 9.8/10. Published 2019-05-14.
- How severe is CVE-2019-10922?
- Critical severity. CVSS v3 base score is 9.8 out of 10.