TP-Link Kasa up to KS230 KIT v2 improper authentication

Summaryinfo

A vulnerability classified as very critical has been found in TP-Link Kasa. This affects an unknown part. Performing a manipulation results in improper authentication. This vulnerability was named CVE-2026-108473. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability was found in TP-Link Kasa. It has been classified as very critical. This affects some unknown processing. The manipulation with an unknown input leads to a improper authentication vulnerability. CWE is classifying the issue as CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

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.

The advisory is shared at tp-link.com. This vulnerability is uniquely identified as CVE-2026-108473 since 10/10/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/14/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

• TP-Link

Name

• Kasa

Version

• EP10 v1
• EP40 v1
• EP40A v1
• ES20M v1
• HS103 v5
• HS200 v5
• HS210 v3
• HS220 v3
• HS300 v2
• KL110 v4
• KL125 v4
• KL135 v2
• KL420L5 v1
• KP115 v1
• KP200 v3
• KP303 v2
• KP400 v3
• KP401 v1
• KP405 v1
• KS200 v1
• KS200M v1
• KS220 v1
• KS220M v1
• KS230 KIT v2

License

• commercial

Website

• Vendor: https://www.tp-link.com/

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