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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-108473
StatePUBLISHED
AssignerTPLink
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-14 01:17:06 UTC
Updated2026-10-14 01:17:06 UTC
DescriptionMultiple 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.

Risk And Classification

Primary CVSS: v4.0 8.7 HIGH from f23511db-6c3e-4e32-a477-6aa17d310630

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

Problem Types: CWE-306 | CWE-306 CWE-306 Missing authentication for critical function

VersionSourceTypeScoreSeverityVector
4.0f23511db-6c3e-4e32-a477-6aa17d310630Secondary8.7HIGHCVSS: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/C...
4.0CNACVSS8.7HIGHCVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS v4.0 Breakdown

Attack Vector
Adjacent
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
None
Confidentiality
High
Integrity
High
Availability
High
Sub Conf.
None
Sub Integrity
None
Sub Availability
None

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA TP-Link Systems Inc. HS103 V5 affected 1.1.3 Build 250908 Rel.112508 custom Not specified
CNA TP-Link Systems Inc. EP10 V1 affected 1.1.1 Build 250908 Rel.112508 custom Not specified
CNA TP-Link Systems Inc. EP40 V1 affected 1.1.0 Build 250225 Rel.171723 custom Not specified
CNA TP-Link Systems Inc. HS200 V5 affected 1.1.2 Build 241220 Rel.165559 custom Not specified
CNA TP-Link Systems Inc. KP401 V1 affected 1.1.2 Build 241223 Rel.094434 custom Not specified
CNA TP-Link Systems Inc. KS230 KIT V2 affected 1.1.4 Build 241223 Rel.105830 custom Not specified
CNA TP-Link Systems Inc. KP405 V1 affected 1.1.0 Build 250225 Rel.174632 custom Not specified
CNA TP-Link Systems Inc. HS220 V3 affected 1.1.4 Build 241220 Rel.171050 custom Not specified
CNA TP-Link Systems Inc. KP115 V1 affected 1.1.1 Build 250908 Rel.112945 custom Not specified
CNA TP-Link Systems Inc. HS210 V3 affected 1.1.0 Build 250225 Rel.163425 custom Not specified
CNA TP-Link Systems Inc. HS300 V2 affected 1.1.2 Build 241220 Rel.171333 custom Not specified
CNA TP-Link Systems Inc. KP200 V3 affected 1.1.0 Build 250225 Rel.171724 custom Not specified
CNA TP-Link Systems Inc. KP303 V2 affected 1.1.2 Build 241220 Rel.173321 custom Not specified
CNA TP-Link Systems Inc. KS200 V1 affected 1.1.2 Build 241223 Rel.103857 custom Not specified
CNA TP-Link Systems Inc. EP40A V1 affected 1.1.1 Build 250908 Rel.112526 custom Not specified
CNA TP-Link Systems Inc. KS220 V1 affected 1.1.3 Build 241223 Rel.105515 custom Not specified
CNA TP-Link Systems Inc. KS200M V1 affected 1.1.4 Build 241223 Rel.104700 custom Not specified
CNA TP-Link Systems Inc. ES20M V1 affected 1.1.6 Build 250522 Rel.210254 custom Not specified
CNA TP-Link Systems Inc. KS220M V1 affected 1.1.6 Build 250522 Rel.210254 custom Not specified
CNA TP-Link Systems Inc. KP400 V3 affected 1.1.0 Build 250225 Rel.171723 custom Not specified
CNA TP-Link Systems Inc. KL125 V4 affected 1.1.1 Build 260710 Rel.082646 custom Not specified
CNA TP-Link Systems Inc. KL135 V2 affected 1.1.1 Build 260710 Rel.082646 custom Not specified
CNA TP-Link Systems Inc. KL110 V4 affected 1.1.1 Build 260710 Rel.082646 custom Not specified
CNA TP-Link Systems Inc. KL420L5 V1 affected 1.4.2 Build 260605 Rel.035033 custom Not specified

References

ReferenceSourceLinkTags
www.tp-link.com/us/support/download f23511db-6c3e-4e32-a477-6aa17d310630 www.tp-link.com
www.tp-link.com/us/support/faq/5342 f23511db-6c3e-4e32-a477-6aa17d310630 www.tp-link.com
www.tp-link.com/en/support/download f23511db-6c3e-4e32-a477-6aa17d310630 www.tp-link.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: M. Hammad Mazhar from University of Northern Colorado & Madeline Cooreman (en)

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