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CVE-2026-108473

HIGHCVSS 8.7/10EPSS 0.27%

Last modified

CVE-2026-108473 is a high-severity vulnerability rated 8.7/10 on the CVSS scale. Multiple 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. EPSS estimates a 0.27% chance of exploitation in the next 30 days.

Description

Multiple 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.

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
0.27%

18.5th 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.HS103 v5< 1.1.3 Build 250908 Rel.112508
TP-Link Systems Inc.EP10 v1< 1.1.1 Build 250908 Rel.112508
TP-Link Systems Inc.EP40 v1< 1.1.0 Build 250225 Rel.171723
TP-Link Systems Inc.HS200 v5< 1.1.2 Build 241220 Rel.165559
TP-Link Systems Inc.KP401 v1< 1.1.2 Build 241223 Rel.094434
TP-Link Systems Inc.KS230 KIT v2< 1.1.4 Build 241223 Rel.105830
TP-Link Systems Inc.KP405 v1< 1.1.0 Build 250225 Rel.174632
TP-Link Systems Inc.HS220 v3< 1.1.4 Build 241220 Rel.171050
TP-Link Systems Inc.KP115 v1< 1.1.1 Build 250908 Rel.112945
TP-Link Systems Inc.HS210 v3< 1.1.0 Build 250225 Rel.163425
TP-Link Systems Inc.HS300 v2< 1.1.2 Build 241220 Rel.171333
TP-Link Systems Inc.KP200 v3< 1.1.0 Build 250225 Rel.171724
TP-Link Systems Inc.KP303 v2< 1.1.2 Build 241220 Rel.173321
TP-Link Systems Inc.KS200 v1< 1.1.2 Build 241223 Rel.103857
TP-Link Systems Inc.EP40A v1< 1.1.1 Build 250908 Rel.112526
TP-Link Systems Inc.KS220 v1< 1.1.3 Build 241223 Rel.105515
TP-Link Systems Inc.KS200M v1< 1.1.4 Build 241223 Rel.104700
TP-Link Systems Inc.ES20M v1< 1.1.6 Build 250522 Rel.210254
TP-Link Systems Inc.KS220M v1< 1.1.6 Build 250522 Rel.210254
TP-Link Systems Inc.KP400 v3< 1.1.0 Build 250225 Rel.171723
TP-Link Systems Inc.KL125 v4< 1.1.1 Build 260710 Rel.082646
TP-Link Systems Inc.KL135 v2< 1.1.1 Build 260710 Rel.082646
TP-Link Systems Inc.KL110 v4< 1.1.1 Build 260710 Rel.082646
TP-Link Systems Inc.KL420L5 v1< 1.4.2 Build 260605 Rel.035033

References

Timeline

Published
Last Modified
Status
Deferred

Frequently Asked Questions

What is CVE-2026-108473?
Multiple 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.
How severe is CVE-2026-108473?
CVE-2026-108473 has a CVSS score of 8.7/10 (HIGH severity). The EPSS model estimates a 0.27% probability of exploitation in the next 30 days.
How do I fix CVE-2026-108473?
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