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CVE-2026-76784

HIGHCVSS 8.7/10EPSS 0.15%

Last modified

CVE-2026-76784 is a high-severity vulnerability rated 8.7/10 on the CVSS scale. 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. EPSS estimates a 0.15% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 4.0
8.7/10

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

EPSS Probability
0.15%

4.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

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

References

Timeline

Published
Last Modified
Status
Awaiting Analysis

Frequently Asked Questions

What is CVE-2026-76784?
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.
How severe is CVE-2026-76784?
CVE-2026-76784 has a CVSS score of 8.7/10 (HIGH severity). The EPSS model estimates a 0.15% probability of exploitation in the next 30 days.
How do I fix CVE-2026-76784?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST