TP-Link T2600G-28SQ uses vulnerable SSH host keys


TP-Link layer-2 switch T2600G-28SQ uses vulnerable SSH host keys (CWE-1391).

Kuniyuki Hasegawa of VeriServe Corporation reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.
CVSS Severity (What is CVSS?)

CVSS V3 Severity:
Base Metrics 5.3 (Medium) [IPA Score]
  • Attack Vector: Adjacent Network
  • Attack Complexity: High
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
  • Confidentiality Impact: High
  • Integrity Impact: None
  • Availability Impact: None
CVSS V2 Severity:
Base Metrics 4.6 (Medium) [IPA Score]
  • Access Vector: Adjacent Network
  • Access Complexity: High
  • Authentication: None
  • Confidentiality Impact: Complete
  • Integrity Impact: None
  • Availability Impact: None
Affected Products

TP-LINK Technologies
  • T2600G-28SQ firmware versions prior to "T2600G-28SQ(UN)_V1_1.0.6 Build 20230227"


The credential information for an affected device may be obtained when the administrator is tricked to login to a device which spoofs the affected device.

[Update the Firmware]
Update the firmware to the latest version according to the information provided by the developer.
Vendor Information

TP-LINK Technologies
CWE (What is CWE?)

  1. No Mapping(CWE-Other) [IPA Evaluation]
CVE (What is CVE?)

  1. CVE-2023-28368

  1. JVN : JVN#62420378
Revision History

  • [2023/03/17]
      Web page was published