High 8.7Published Oct 14, 2026

CVE-2026-108473Improper Authentication and Credential Exposure in Multiple TP-Link Kasa Devices

Updated under an hour ago (2026-10-19 08:30 UTC)

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It affects TP-Link Systems Inc. HS103 v5 and 23 other products. Add what you run to find out whether that includes you.

EPSS puts the chance of exploitation in the next 30 days at 0.27%, higher than 19% of scored CVEs.

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Every CVE for TP-Link Systems Inc. HS103 v5

Exploited in the last 30 days

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.

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-306
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): 0.27% (percentile 19)
Assigned by: TPLink
NVD analysis: Deferred
Record last updated: Oct 14, 2026
First seen by InfoSec Signals: Oct 14, 2026

Affected products

Affected products

TP-Link Systems Inc. HS103 v5 tp_link_systems:hs103_v5 (from the name)	before 1.1.3 Build 250908 Rel.112508	CNA record
TP-Link Systems Inc. EP10 v1 tp_link_systems:ep10_v1 (from the name)	before 1.1.1 Build 250908 Rel.112508	CNA record
TP-Link Systems Inc. EP40 v1 tp_link_systems:ep40_v1 (from the name)	before 1.1.0 Build 250225 Rel.171723	CNA record
TP-Link Systems Inc. HS200 v5 tp_link_systems:hs200_v5 (from the name)	before 1.1.2 Build 241220 Rel.165559	CNA record
TP-Link Systems Inc. KP401 v1 tp_link_systems:kp401_v1 (from the name)	before 1.1.2 Build 241223 Rel.094434	CNA record
TP-Link Systems Inc. KS230 KIT v2 tp_link_systems:ks230_kit_v2 (from the name)	before 1.1.4 Build 241223 Rel.105830	CNA record
TP-Link Systems Inc. KP405 v1 tp_link_systems:kp405_v1 (from the name)	before 1.1.0 Build 250225 Rel.174632	CNA record
TP-Link Systems Inc. HS220 v3 tp_link_systems:hs220_v3 (from the name)	before 1.1.4 Build 241220 Rel.171050	CNA record
TP-Link Systems Inc. KP115 v1 tp_link_systems:kp115_v1 (from the name)	before 1.1.1 Build 250908 Rel.112945	CNA record
TP-Link Systems Inc. HS210 v3 tp_link_systems:hs210_v3 (from the name)	before 1.1.0 Build 250225 Rel.163425	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. KP200 v3 tp_link_systems:kp200_v3 (from the name)	before 1.1.0 Build 250225 Rel.171724	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. KS200 v1 tp_link_systems:ks200_v1 (from the name)	before 1.1.2 Build 241223 Rel.103857	CNA record
TP-Link Systems Inc. EP40A v1 tp_link_systems:ep40a_v1 (from the name)	before 1.1.1 Build 250908 Rel.112526	CNA record
TP-Link Systems Inc. KS220 v1 tp_link_systems:ks220_v1 (from the name)	before 1.1.3 Build 241223 Rel.105515	CNA record
TP-Link Systems Inc. KS200M v1 tp_link_systems:ks200m_v1 (from the name)	before 1.1.4 Build 241223 Rel.104700	CNA record
TP-Link Systems Inc. ES20M v1 tp_link_systems:es20m_v1 (from the name)	before 1.1.6 Build 250522 Rel.210254	CNA record
TP-Link Systems Inc. KS220M v1 tp_link_systems:ks220m_v1 (from the name)	before 1.1.6 Build 250522 Rel.210254	CNA record
TP-Link Systems Inc. KP400 v3 tp_link_systems:kp400_v3 (from the name)	before 1.1.0 Build 250225 Rel.171723	CNA record
TP-Link Systems Inc. KL125 v4 tp_link_systems:kl125_v4 (from the name)	before 1.1.1 Build 260710 Rel.082646	CNA record
TP-Link Systems Inc. KL135 v2 tp_link_systems:kl135_v2 (from the name)	before 1.1.1 Build 260710 Rel.082646	CNA record
TP-Link Systems Inc. KL110 v4 tp_link_systems:kl110_v4 (from the name)	before 1.1.1 Build 260710 Rel.082646	CNA record
TP-Link Systems Inc. KL420L5 v1 tp_link_systems:kl420l5_v1 (from the name)	before 1.4.2 Build 260605 Rel.035033	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/us/support/faq/5342/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.