Vulnerability in Siemens Simatic Drive Controller Family
CVE-2021-37205
A vulnerability has been identified in SIMATIC Drive Controller family (All versions >= V2.9.2 < V2.9.4), SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) (All versions >= V21.9 < V21.9.4), SIMATIC S7-1200 CPU family…
EPSS: 0.014 (80.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C.
Affected products
- Siemens Simatic Drive Controller Family — versions All versions >= V2.9.2 < V2.9.4
- Siemens Simatic Et 200sp Open Controller Cpu 1515sp Pc2 (Incl. Siplus Variants) — versions All versions >= V21.9 < V21.9.4
- Siemens Simatic S7-1200 Cpu Family (Incl. Siplus Variants) — versions All versions >= V4.5.0 < V4.5.2
- Siemens Simatic S7-1500 Cpu Family (Incl. Related Et200 Cpus And Siplus Variants) — versions All versions >= V2.9.2 < V2.9.4
- Siemens Simatic S7-1500 Software Controller — versions All versions >= V21.9 < V21.9.4
- Siemens Simatic S7-plcsim Advanced — versions All versions >= V4.0 < V4.0 SP1
- Siemens Siplus Tim 1531 Irc — versions All versions < V2.3.6
- Siemens Tim 1531 Irc — versions All versions < V2.3.6
Weakness classification (CWE)
Public proof-of-concept exploits
References
Frequently asked questions
- What is CVE-2021-37205?
- CVE-2021-37205 is a high-severity vulnerability in Siemens Simatic Drive Controller Family, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 7.5/10. Published 2022-02-09.
- How severe is CVE-2021-37205?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2021-37205 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.