CVE-2021-37205: high-severity vulnerability in Siemens SIMATIC Drive Controller family
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.5epss 1.6%
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 (incl. SIPLUS variants) (All versions >= V4.5.0 < V4.5.2), SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions >= V2.9.2 < V2.9.4), SIMATIC S7-1500 Software Controller (All versions >= V21.9 < V21.9.4), SIMATIC S7-PLCSIM Advanced (All versions >= V4.0 < V4.0 SP1), SIPLUS TIM 1531 IRC (All versions < V2.3.6), TIM 1531 IRC (All versions < V2.3.6). An unauthenticated attacker could cause a denial-of-service condition in a PLC when sending specially prepared packets over port 102/tcp. A restart of the affected device is needed to restore normal operations.
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 familySiemens · SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants)Siemens · SIMATIC S7-1200 CPU family (incl. SIPLUS variants)Siemens · SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants)Siemens · SIMATIC S7-1500 Software ControllerSiemens · SIMATIC S7-PLCSIM AdvancedSiemens · SIPLUS TIM 1531 IRCSiemens · TIM 1531 IRCRelated CVEs — Siemens SIMATIC Drive Controller family
In the same product, most dangerous first.