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Fencer Intel
high 8.7

CVE-2026-108473 json

Improper Authentication and Credential Exposure in Multiple TP-Link Kasa Devices

published 27d ago modified 25d ago also EUVD-2026-100759

cvss
8.7
version 4.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 19%
public exploits
0
none known

Summary

Multiple Kasa devices contain an improper authentication vulnerability in the local device-management protocol. An unauthenticated adjacent attacker may send management instructions to an affected device without adequate authentication or authorization, allowing modification of the device state or management settings. Under certain usage conditions involving interaction between the user, mobile application, and device-cloud service, insufficient protection of account-related communications may also expose account information.

Successful exploitation may allow an unauthenticated adjacent-network attacker to perform unauthorized device-management actions and disrupt legitimate user control. Under certain conditions, account-related information may also be exposed, potentially leading to compromise of the associated cloud account.

Patch / fix

  • TP-Link Systems Inc. HS103 v5 1.1.3 Build 250908 Rel.112508
  • TP-Link Systems Inc. EP10 v1 1.1.1 Build 250908 Rel.112508
  • TP-Link Systems Inc. EP40 v1 1.1.0 Build 250225 Rel.171723
  • TP-Link Systems Inc. HS200 v5 1.1.2 Build 241220 Rel.165559
  • TP-Link Systems Inc. KP401 v1 1.1.2 Build 241223 Rel.094434
  • TP-Link Systems Inc. KS230 KIT v2 1.1.4 Build 241223 Rel.105830
  • TP-Link Systems Inc. KP405 v1 1.1.0 Build 250225 Rel.174632
  • TP-Link Systems Inc. HS220 v3 1.1.4 Build 241220 Rel.171050
  • TP-Link Systems Inc. KP115 v1 1.1.1 Build 250908 Rel.112945
  • TP-Link Systems Inc. HS210 v3 1.1.0 Build 250225 Rel.163425
  • TP-Link Systems Inc. HS300 v2 1.1.2 Build 241220 Rel.171333
  • TP-Link Systems Inc. KP200 v3 1.1.0 Build 250225 Rel.171724
  • TP-Link Systems Inc. KP303 v2 1.1.2 Build 241220 Rel.173321
  • TP-Link Systems Inc. KS200 v1 1.1.2 Build 241223 Rel.103857
  • TP-Link Systems Inc. EP40A v1 1.1.1 Build 250908 Rel.112526
  • TP-Link Systems Inc. KS220 v1 1.1.3 Build 241223 Rel.105515
  • TP-Link Systems Inc. KS200M v1 1.1.4 Build 241223 Rel.104700
  • TP-Link Systems Inc. ES20M v1 1.1.6 Build 250522 Rel.210254
  • TP-Link Systems Inc. KS220M v1 1.1.6 Build 250522 Rel.210254
  • TP-Link Systems Inc. KP400 v3 1.1.0 Build 250225 Rel.171723
  • TP-Link Systems Inc. KL125 v4 1.1.1 Build 260710 Rel.082646
  • TP-Link Systems Inc. KL135 v2 1.1.1 Build 260710 Rel.082646
  • TP-Link Systems Inc. KL110 v4 1.1.1 Build 260710 Rel.082646
  • TP-Link Systems Inc. KL420L5 v1 1.4.2 Build 260605 Rel.035033

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CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
26d ago

Exploit prediction

0.28% chance of exploitation in the next 30 days, higher than 19% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 4.0 8.7 CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CNA 4.0 8.7 CVSS:4.0/AV:A/AC:L/AT:N/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

Affected products

  • TP-Link Systems Inc. HS103 v5
  • TP-Link Systems Inc. EP10 v1
  • TP-Link Systems Inc. EP40 v1
  • TP-Link Systems Inc. HS200 v5
  • TP-Link Systems Inc. KP401 v1
  • TP-Link Systems Inc. KS230 KIT v2
  • TP-Link Systems Inc. KP405 v1
  • TP-Link Systems Inc. HS220 v3
  • TP-Link Systems Inc. KP115 v1
  • TP-Link Systems Inc. HS210 v3
  • TP-Link Systems Inc. HS300 v2
  • TP-Link Systems Inc. KP200 v3
  • TP-Link Systems Inc. KP303 v2
  • TP-Link Systems Inc. KS200 v1
  • TP-Link Systems Inc. EP40A v1
  • TP-Link Systems Inc. KS220 v1
  • TP-Link Systems Inc. KS200M v1
  • TP-Link Systems Inc. ES20M v1
  • TP-Link Systems Inc. KS220M v1
  • TP-Link Systems Inc. KP400 v3
  • TP-Link Systems Inc. KL125 v4
  • TP-Link Systems Inc. KL135 v2
  • TP-Link Systems Inc. KL110 v4
  • TP-Link Systems Inc. KL420L5 v1

Classification

Weakness
  • CWE-306 Missing Authentication for Critical Functionality

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.