CVE record · CVE-2026-76784

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

CVSS 8.7 HighEPSS 0.0020 · 9th percentile

Published by the CVE Program (CNA: TPLink) at 26 Aug 2026, 17:47 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
TP-Link Systems Inc.	HS103P3 / HS103P4 v5	affected before 1.1.3 Build 250908 Rel.112508 custom Other versions: unaffected
TP-Link Systems Inc.	EP10	affected before 1.1.1 Build 250908 Rel.112508 custom Other versions: unaffected
TP-Link Systems Inc.	EP25 V2	affected before 1.0.3 Build 240529 Rel.145252 custom Other versions: unaffected
TP-Link Systems Inc.	HS300 V2	affected before 1.1.2 Build 241220 Rel.171333 custom Other versions: unaffected
TP-Link Systems Inc.	KP303 V2	affected before 1.1.2 Build 241220 Rel.173321 custom Other versions: unaffected
TP-Link Systems Inc.	EP40A	affected before 1.1.1 Build 250908 Rel.112526 custom Other versions: unaffected
TP-Link Systems Inc.	KP125MP2 / KP125MP4	affected before 1.2.5 Build 241213 Rel.172504 custom Other versions: unaffected
TP-Link Systems Inc.	KP115	affected before 1.1.1 Build 250908 Rel.112945 custom Other versions: unaffected
TP-Link Systems Inc.	KS225	affected before 1.1.1 Build 240626 Rel.175125 custom Other versions: unaffected
TP-Link Systems Inc.	EP40M	affected before 1.1.0 Build 240415 Rel.171219 custom Other versions: unaffected
TP-Link Systems Inc.	KS205	affected before 1.1.1 Build 240724 Rel.105920 custom Other versions: unaffected
TP-Link Systems Inc.	KS240	affected before 1.0.6 Build 240122 Rel.160100 custom Other versions: unaffected
TP-Link Systems Inc.	ES20M	affected before 1.1.6 Build 250522 Rel.210254 custom Other versions: unaffected
TP-Link Systems Inc.	KS220M	affected before 1.1.6 Build 250522 Rel.210254 custom Other versions: unaffected
TP-Link Systems Inc.	KP200 V3	affected before 1.1.0 Build 250225 Rel.171724 custom Other versions: unaffected
TP-Link Systems Inc.	HS200 V5.26	affected before 1.0.3 Build 240723 Rel.192622 custom Other versions: unaffected
TP-Link Systems Inc.	HS220-LA(US) 6.6 / HS220-BL(US) 6.6	affected before 1.0.3 Build 240723 Rel.192630 custom Other versions: unaffected
TP-Link Systems Inc.	HS220 V3.26	affected before 1.1.1 Build 240802 Rel.094131 custom Other versions: unaffected
TP-Link Systems Inc.	HS220-LA(US) 4.6 / HS220-BL(US) 4.6	affected before 1.1.1 Build 240802 Rel.094142 custom Other versions: unaffected
TP-Link Systems Inc.	KL125	affected before 1.1.1 Build 260710 Rel.082646 custom Other versions: unaffected

Identifiers: CVE-2026-76784
CNA: TPLink
Weakness (CWE): CWE-325
Tags: TP-Link Systems Inc. HS103P3 / HS103P4 v5
TP-Link Systems Inc. EP10
TP-Link Systems Inc. EP25 V2
TP-Link Systems Inc. HS300 V2
TP-Link Systems Inc. KP303 V2
TP-Link Systems Inc. EP40A
TP-Link Systems Inc. KP125MP2 / KP125MP4
TP-Link Systems Inc. KP115
CWE-325
Published: 26 Aug 2026
Updated: 26 Aug 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
8.7	High	4.0	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 (TPLink)

CISA KEV Not listed.
EPSS 0.0020, the 9th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 26 Aug 2026. New records show when each source confirmed them.

Sources

References from the CNA

www.tp-link.com/us/support/download/ patch
www.tp-link.com/en/support/download/ patch
www.tp-link.com/in/support/download/ patch
www.tp-link.com/us/support/faq/5267/ vendor-advisory

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.