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OpenAdvisories
High · 8.7 CVE-2026-108473 EUVD-2026-100759GHSA-jmmx-r2fg-mcgh

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

Published Oct 14, 2026 · Updated Oct 14, 2026 · Assigned by TPLink

Vendor: TP-Link Systems Product: EP10 v1 Product: EP40 v1 Product: EP40A v1 Product: ES20M v1 Product: HS103 v5 Product: HS200 v5 Product: HS210 v3 Product: HS220 v3 Product: HS300 V2 Product: KL110 v4 Product: KL125 v4 Product: KL135 v2 Product: KL420L5 v1 Product: KP115 v1 Product: KP200 V3 Product: KP303 V2 Product: KP400 v3 Product: KP401 v1 Product: KP405 v1 Product: KS200 v1 Product: KS200M v1 Product: KS220 v1 Product: KS220M v1 Product: KS230 KIT v2 Category: Network devices

Description

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.

Affected products

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

References