CVE-2021-27388 — CRITICAL (9.8)

Vulnerability Description

SINAMICS medium voltage routable products are affected by a vulnerability in the Sm@rtServer component for remote access that could allow an unauthenticated attacker to cause a denial-of-service condition, and/or execution of limited configuration modifications and/or execution of limited control commands on the SINAMICS Medium Voltage Products, Remote Access (SINAMICS SL150: All versions, SINAMICS SM150: All versions, SINAMICS SM150i: All versions).

CVSS Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Siemens	Sinamics Sl150 Firmware	All versions
Siemens	Sinamics Sl150	-
Siemens	Sinamics Sm150 Firmware	All versions
Siemens	Sinamics Sm150	-
Siemens	Sinamics Sm150I Firmware	All versions
Siemens	Sinamics Sm150I	-

Related Weaknesses (CWE)

CWE-20

References

https://us-cert.cisa.gov/ics/advisories/icsa-21-131-04Not Applicable
https://us-cert.cisa.gov/ics/advisories/icsa-21-131-04Not Applicable

FAQ

What is CVE-2021-27388?

CVE-2021-27388 is a vulnerability with a CVSS score of 9.8 (CRITICAL). SINAMICS medium voltage routable products are affected by a vulnerability in the Sm@rtServer component for remote access that could allow an unauthenticated attacker to cause a denial-of-service condi...

How severe is CVE-2021-27388?

CVE-2021-27388 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2021-27388?

Check the references section above for vendor advisories and patch information. Affected products include: Siemens Sinamics Sl150 Firmware, Siemens Sinamics Sl150, Siemens Sinamics Sm150 Firmware, Siemens Sinamics Sm150, Siemens Sinamics Sm150I Firmware.