Vulnerability Details : CVE-2021-31337
The Telnet service of the SIMATIC HMI Comfort Panels system component in affected products does not require authentication, which may allow a remote attacker to gain access to the device if the service is enabled. Telnet is disabled by default on the SINAMICS Medium Voltage Products (SINAMICS SL150: All versions, SINAMICS SM150: All versions, SINAMICS SM150i: All versions).
Products affected by CVE-2021-31337
- cpe:2.3:o:siemens:sinamics_sl150_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:sinamics_sm150_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:sinamics_sm150i_firmware:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-31337
0.31%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 69 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-31337
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.8
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:P/A:P |
8.6
|
6.4
|
NIST | |
|
9.8
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST |
CWE ids for CVE-2021-31337
-
The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.Assigned by: productcert@siemens.com (Primary)
References for CVE-2021-31337
-
https://us-cert.cisa.gov/ics/advisories/icsa-21-131-04
Siemens SINAMICS Medium Voltage Products Remote Access (Update A) | CISANot Applicable;Third Party Advisory;US Government Resource
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