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cve[email protected]CVE-2021-31337
HistoryJun 28, 2021 - 1:15 p.m.

CVE-2021-31337

2021-06-2813:15:20
CWE-306
web.nvd.nist.gov
21
4
cve-2021-31337
telnet service
simatic hmi comfort panels
authentication bypass
remote access
sinamics medium voltage products
nvd

6.8 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

9.4 High

AI Score

Confidence

High

0.003 Low

EPSS

Percentile

70.2%

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).

Affected configurations

NVD
Node
siemenssinamics_sl150Match-
AND
siemenssinamics_sl150_firmware
Node
siemenssinamics_sm150Match-
AND
siemenssinamics_sm150_firmware
Node
siemenssinamics_sm150iMatch-
AND
siemenssinamics_sm150i_firmware

CNA Affected

[
  {
    "product": "SINAMICS Medium Voltage Products",
    "vendor": "n/a",
    "versions": [
      {
        "status": "affected",
        "version": "SINAMICS SL150: All versions, SINAMICS SM150: All versions, SINAMICS SM150i: All versions"
      }
    ]
  }
]

Social References

More

6.8 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

9.4 High

AI Score

Confidence

High

0.003 Low

EPSS

Percentile

70.2%

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