[Japanese]

JVNDB-2026-000082

Multiple TP-Link products vulnerable to cleartext transmission of sensitive information

Overview

Multiple TP-Link products provided by TP-Link Systems Inc. contain the following vulnerability.
  • Cleartext transmission of sensitive information (CWE-319) - CVE-2026-34126
eyegrep and izurina of L Plus LLC 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 6.7 (Medium) [IPA Score]
  • Attack Vector: Adjacent Network
  • Attack Complexity: High
  • Privileges Required: None
  • User Interaction: Required
  • Scope: Unchanged
  • Confidentiality Impact: High
  • Integrity Impact: High
  • Availability Impact: Low
CVSS v4 Severity
Base Metrics: 7.3 (High) [IPA Score]
  • Access Vector (AV): Adjacent NetworkNetwork
  • Attack Complexity (AC): Low
  • Attack Requirements (AT): Present
  • Privileges Required (PR): None
  • User Interaction (UI): Active
    • Vulnerable System Impact
  • Confidentiality Impact (VC): High
  • Integrity Impact (VI): High
  • Availability Impact (VA): Low
    • Subsequent System Impact
  • Confidentiality Impact (SC): None
  • Integrity Impact (SI): None
  • Availability Impact (SA): None
Affected Products


TP-Link Systems Inc.
  • Tapo D100C hardware version v1.0 region EU / JP / US Firmware versions prior to 1.3.1 Build 260421 Rel.031658
  • Tapo L535E hardware version v3.0 region EU / US Firmware versions prior to 1.4.1 Build 251016 Rel.204554
  • Tapo L535E hardware version v1.0 region JP Firmware versions prior to 1.4.1 Build 251016 Rel.204554
  • Tapo P300 hardware version v1.0 region EU Firmware versions prior to 1.4.2 Build 251219 Rel.142654
  • Tapo P300 hardware version v1.0 region JP Firmware versions prior to 1.4.0 Build 260416 Rel.014037

Note: D100C is the chime delivered with Tapo cameras, and it is delivered with the following Tapo products:
  • D130, D210, D235, D225, TD21, TDB21 and TD25
Impact

An attacker could exploit this vulnerability by performing a man-in-the-middle attack or sniffing Bluetooth communications. This could allow the attacker to intercept or modify communications, or to gain unauthorized control of the device during initialization.
Solution

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

TP-Link Systems Inc.
CWE (What is CWE?)

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

  1. CVE-2026-34126
References

  1. JVN : JVN#70631953
Revision History

  • [2026/06/05]
      Web page was published

Date Public2026/06/05
Date First Published2026/06/05
Date Last Updated2026/06/05