5.4

CVE-2026-102370

Physical UART Access Leading to an Unauthenticated Root Shell in TP-Link Kasa EC70 and EC71

Kasa EC70 v4
and EC71 v4 do not logically disable the production debug interface at the
firmware or chip level and do not lock the bootloader.  Although the debug traces are physically
severed during manufacturing, an attacker with physical access can restore the
connection, interrupt the boot process, and manipulate boot parameters to enter
a non-standard initialization path that exposes an unauthenticated root shell
during startup.









Successful exploitation may allow an
attacker with physical access to obtain root-level command access during device
startup, resulting in loss of confidentiality, integrity, and availability for
the affected device. Exploitation requires device disassembly, restoration of
the severed debug connection, and manipulation of the boot process.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerTP-Link Systems Inc.
≫
Produkt Kasa EC70 V4
Default Statusunaffected
Version 0
Version < 2.4.3 Build 20260902 rel.4511
Status affected
HerstellerTP-Link Systems Inc.
≫
Produkt Kasa EC71 V4
Default Statusunaffected
Version 0
Version < 2.4.3 Build 20260902 rel.4511
Status affected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.18% 0.067
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
f23511db-6c3e-4e32-a477-6aa17d310630 5.4 0 0
CVSS:4.0/AV:P/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CWE-1191 On-Chip Debug and Test Interface With Improper Access Control

The chip does not implement or does not correctly perform access control to check whether users are authorized to access internal registers and test modes through the physical debug/test interface.

https://www.tp-link.com/us/support/download/ec70/v4/#Firmware-Release-Notes
https://www.tp-link.com/us/support/download/ec71/v4/#Firmware-Release-Notes
https://www.tp-link.com/us/support/faq/5324/