Critical severity · published Jun 15, 2021
CVE-2021-27388
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…
9.8
CVSS
1.5%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.5% · higher than 75% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SS
Sinamics Sl150 Firmware · Siemens
All versions, or not specified · source: NVD
SS
Sinamics Sm150 Firmware · Siemens
All versions, or not specified · source: NVD
SS
Sinamics Sm150i Firmware · Siemens
All versions, or not specified · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-27388
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-27388
Not Applicable
https://us-cert.cisa.gov/ics/advisories/icsa-21-131-04
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