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).
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
siemensCNA
---
---
CVEADP
---
---
Base Score
CVSS 3.x
EPSS Score
Percentile: 68%
VendorProductVersion
siemenssinamics_sl150_firmware
*
siemenssinamics_sm150_firmware
*
siemenssinamics_sm150i_firmware
*
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://us-cert.cisa.gov/ics/advisories/icsa-21-131-04
https://us-cert.cisa.gov/ics/advisories/icsa-21-131-04