Insufficient Cryptographic Protections in Local Device Communication Protocol on Multiple TP-Link Kasa Smart Home Devices

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-76784
StatePUBLISHED
AssignerTPLink
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-26 18:17:01 UTC
Updated2026-08-26 18:17:01 UTC
DescriptionMultiple TP-Link Kasa smart home devices contain insufficient cryptographic protections in the local device communication protocol. An adjacent network attacker may intercept, replay or forge locally exchanged control messages, potentially resulting in unauthorized device control. Successful exploitation could allow an attacker to manipulate the operational state of an affected device, resulting in unauthorized state changes, disruption of normal device functionality or a denial-of-service condition.

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-325 | CWE-325 CWE-325: Missing Cryptographic Step

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. HS103P3 / HS103P4 V5 affected 1.1.3 Build 250908 Rel.112508 custom Not specified
CNA TP-Link Systems Inc. EP10 affected 1.1.1 Build 250908 Rel.112508 custom Not specified
CNA TP-Link Systems Inc. EP25 V2 affected 1.0.3 Build 240529 Rel.145252 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. KP303 V2 affected 1.1.2 Build 241220 Rel.173321 custom Not specified
CNA TP-Link Systems Inc. EP40A affected 1.1.1 Build 250908 Rel.112526 custom Not specified
CNA TP-Link Systems Inc. KP125MP2 / KP125MP4 affected 1.2.5 Build 241213 Rel.172504 custom Not specified
CNA TP-Link Systems Inc. KP115 affected 1.1.1 Build 250908 Rel.112945 custom Not specified
CNA TP-Link Systems Inc. KS225 affected 1.1.1 Build 240626 Rel.175125 custom Not specified
CNA TP-Link Systems Inc. EP40M affected 1.1.0 Build 240415 Rel.171219 custom Not specified
CNA TP-Link Systems Inc. KS205 affected 1.1.1 Build 240724 Rel.105920 custom Not specified
CNA TP-Link Systems Inc. KS240 affected 1.0.6 Build 240122 Rel.160100 custom Not specified
CNA TP-Link Systems Inc. ES20M affected 1.1.6 Build 250522 Rel.210254 custom Not specified
CNA TP-Link Systems Inc. KS220M affected 1.1.6 Build 250522 Rel.210254 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. HS200 V5.26 affected 1.0.3 Build 240723 Rel.192622 custom Not specified
CNA TP-Link Systems Inc. HS220-LAUS 6.6 / HS220-BLUS 6.6 affected 1.0.3 Build 240723 Rel.192630 custom Not specified
CNA TP-Link Systems Inc. HS220 V3.26 affected 1.1.1 Build 240802 Rel.094131 custom Not specified
CNA TP-Link Systems Inc. HS220-LAUS 4.6 / HS220-BLUS 4.6 affected 1.1.1 Build 240802 Rel.094142 custom Not specified
CNA TP-Link Systems Inc. KL125 affected 1.1.1 Build 260710 Rel.082646 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/5267 f23511db-6c3e-4e32-a477-6aa17d310630 www.tp-link.com
www.tp-link.com/in/support/download 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: Priyanka Rushikesh Chaudhary (Research Scholar, CSIS Department, BITS Pilani, Hyderabad Campus, India), Rajib Ranjan Maiti (Associate Professor, CSIS Department, BITS Pilani, Hyderabad Campus, India) (en)

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