CVE-2021-27388: Input Validation
First published: Tue Jun 15 2021(Updated: )
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).
Credit: productcert@siemens.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Siemens Sinamics Sl150 Firmware | ||
| Siemens SINAMICS SL150 | ||
| Siemens Sinamics Sm150 Firmware | ||
| Siemens SINAMICS SM150 | ||
| Siemens Sinamics Sm150i Firmware | ||
| Siemens SINAMICS SM150i |
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Reference Links
Frequently Asked Questions
Which products are affected by CVE-2021-27388?
SINAMICS SL150 Firmware, SINAMICS SM150 Firmware, and SINAMICS SM150i Firmware.
What is the severity of CVE-2021-27388?
The severity of CVE-2021-27388 is critical with a CVSS score of 9.8.
What is the vulnerability description of CVE-2021-27388?
CVE-2021-27388 is a vulnerability in the Sm@rtServer component for remote access in SINAMICS medium voltage routable products, which 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.
How can an attacker exploit CVE-2021-27388?
An attacker can exploit CVE-2021-27388 by sending specially crafted network packets to the affected Sm@rtServer component for remote access.
Is there a fix available for CVE-2021-27388?
Yes, Siemens has released a security update to address the vulnerability. It is recommended to update to the latest firmware version for the affected products.
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