Vulnerability in Siemens Scalance X-200rna Switch Family
CVE-2020-28395
A vulnerability has been identified in SCALANCE X-200RNA switch family (All versions < V3.2.7), SCALANCE X-300 switch family (incl. X408 and SIPLUS NET variants) (All versions < V4.1.0). Devices do not create a new unique private key after factory reset. An attacker could leverage this situation to a man-in-the-middle situation and decrypt previously captured traffic.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.012 (66.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 66th percentile — 66.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000
Affected products
- Siemens Scalance X-200rna Switch Family — versions All versions < V3.2.7
- Siemens Scalance X-300 Switch Family (Incl. X408 And Siplus Net Variants) — versions All versions < V4.1.0
- Siemens Scalance Xr324-12m
- Siemens Scalance Xr324-12m Firmware
- Siemens Scalance Xr324-12m Ts
- Siemens Scalance Xr324-12m Ts Firmware
- Siemens Scalance Xr324-4m Eec
- Siemens Scalance Xr324-4m Eec Firmware
- Siemens Scalance Xr324-4m Poe
- Siemens Scalance Xr324-4m Poe Firmware
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cert-portal.siemens.com/productcert/pdf/ssa-274900.pdf (Vendor Advisory)
- us-cert.cisa.gov/ics/advisories/icsa-21-012-02 (US Government Resource, Third Party Advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2020-28395?
- CVE-2020-28395 is a medium-severity vulnerability in Siemens Scalance X-200rna Switch Family, classified under Use of Hard-coded Cryptographic Key. CVSS score: 5.9/10. Published 2021-01-12.
- How severe is CVE-2020-28395?
- Medium severity. CVSS v3 base score is 5.9 out of 10.
- Is CVE-2020-28395 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.