Vulnerability Monitor

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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).

Published

2021-06-28T13:15:20.840

Last Modified

2024-11-21T06:05:26.710

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 9.8 (CRITICAL)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:P/I:P/A:P

  • Access Vector: NETWORK
  • Access Complexity: MEDIUM
  • Authentication: NONE
  • Confidentiality Impact: PARTIAL
  • Integrity Impact: PARTIAL
  • Availability Impact: PARTIAL
Exploitability Score

8.6

Impact Score

6.4

Weaknesses
  • Type: Primary
    CWE-306
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System siemens sinamics_sl150_firmware * Yes
Hardware siemens sinamics_sl150 - No
Operating System siemens sinamics_sm150_firmware * Yes
Hardware siemens sinamics_sm150 - No
Operating System siemens sinamics_sm150i_firmware * Yes
Hardware siemens sinamics_sm150i - No
References