High 8.7Published Aug 26, 2026

CVE-2026-76784Insufficient Cryptographic Protections in Local Device Communication Protocol on Multiple TP-Link Kasa Smart Home Devices

Updated under an hour ago (2026-10-19 06:30 UTC)

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It affects TP-Link Systems Inc. HS103P3 / HS103P4 v5 and 19 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for TP-Link Systems Inc. HS103P3 / HS103P4 v5

Exploited in the last 30 days

Multiple 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.

CVSS: 8.7 HIGH (v4.0, CNA)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
Weakness (CWE): CWE-325
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: TPLink
NVD analysis: Awaiting Analysis
Record last updated: Aug 26, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

TP-Link Systems Inc. HS103P3 / HS103P4 v5 tp_link_systems:hs103p3_hs103p4_v5 (from the name)	before 1.1.3 Build 250908 Rel.112508	CNA record
TP-Link Systems Inc. EP10 tp_link_systems:ep10 (from the name)	before 1.1.1 Build 250908 Rel.112508	CNA record
TP-Link Systems Inc. EP25 V2 tp_link_systems:ep25_v2 (from the name)	before 1.0.3 Build 240529 Rel.145252	CNA record
TP-Link Systems Inc. HS300 V2 tp_link_systems:hs300_v2 (from the name)	before 1.1.2 Build 241220 Rel.171333	CNA record
TP-Link Systems Inc. KP303 V2 tp_link_systems:kp303_v2 (from the name)	before 1.1.2 Build 241220 Rel.173321	CNA record
TP-Link Systems Inc. EP40A tp_link_systems:ep40a (from the name)	before 1.1.1 Build 250908 Rel.112526	CNA record
TP-Link Systems Inc. KP125MP2 / KP125MP4 tp_link_systems:kp125mp2_kp125mp4 (from the name)	before 1.2.5 Build 241213 Rel.172504	CNA record
TP-Link Systems Inc. KP115 tp_link_systems:kp115 (from the name)	before 1.1.1 Build 250908 Rel.112945	CNA record
TP-Link Systems Inc. KS225 tp_link_systems:ks225 (from the name)	before 1.1.1 Build 240626 Rel.175125	CNA record
TP-Link Systems Inc. EP40M tp_link_systems:ep40m (from the name)	before 1.1.0 Build 240415 Rel.171219	CNA record
TP-Link Systems Inc. KS205 tp_link_systems:ks205 (from the name)	before 1.1.1 Build 240724 Rel.105920	CNA record
TP-Link Systems Inc. KS240 tp_link_systems:ks240 (from the name)	before 1.0.6 Build 240122 Rel.160100	CNA record
TP-Link Systems Inc. ES20M tp_link_systems:es20m (from the name)	before 1.1.6 Build 250522 Rel.210254	CNA record
TP-Link Systems Inc. KS220M tp_link_systems:ks220m (from the name)	before 1.1.6 Build 250522 Rel.210254	CNA record
TP-Link Systems Inc. KP200 V3 tp_link_systems:kp200_v3 (from the name)	before 1.1.0 Build 250225 Rel.171724	CNA record
TP-Link Systems Inc. HS200 V5.26 tp_link_systems:hs200_v5.26 (from the name)	before 1.0.3 Build 240723 Rel.192622	CNA record
TP-Link Systems Inc. HS220-LA(US) 6.6 / HS220-BL(US) 6.6 tp_link_systems:hs220_la_us_6.6_hs220_bl_us_6.6 (from the name)	before 1.0.3 Build 240723 Rel.192630	CNA record
TP-Link Systems Inc. HS220 V3.26 tp_link_systems:hs220_v3.26 (from the name)	before 1.1.1 Build 240802 Rel.094131	CNA record
TP-Link Systems Inc. HS220-LA(US) 4.6 / HS220-BL(US) 4.6 tp_link_systems:hs220_la_us_4.6_hs220_bl_us_4.6 (from the name)	before 1.1.1 Build 240802 Rel.094142	CNA record
TP-Link Systems Inc. KL125 tp_link_systems:kl125 (from the name)	before 1.1.1 Build 260710 Rel.082646	CNA record

References

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

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.