CVE-2026-102370 (GCVE-0-2026-102370)

Vulnerability from cvelistv5 – Published: 2026-10-01 20:47 – Updated: 2026-10-01 21:01
VLAI
Title
Physical UART Access Leading to an Unauthenticated Root Shell in TP-Link Kasa EC70 and EC71
Summary
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.
Severity
5.4 (Medium)
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
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-01 21:01 UTC
CWE
  • CWE-1191 - On-Chip debug and test interface with improper access control
Assigner
References
Impacted products
Vendor Product Version CPE status
TP-Link Systems Inc. Kasa EC70 V4 Affected: 0 , < 2.4.3 Build 20260902 rel.4511 (custom)
guessed Create a notification for this product.
TP-Link Systems Inc. Kasa EC71 V4 Affected: 0 , < 2.4.3 Build 20260902 rel.4511 (custom)
guessed Create a notification for this product.
Credits
Christopher Childress
Show details on NVD website
To clipboard 

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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