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

Quick assessment

Affected
TP-Link Systems Inc. HS103 v5
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

多个Kasa设备在其本地设备管理协议中存在不正确的身份验证漏洞。未经身份验证的相邻网络攻击者可以在无需充分认证或授权的情况下，向受影响设备发送管理指令，从而能够修改设备状态或管理设置。在某些涉及用户、移动应用与设备-云服务交互的使用条件下，对账户相关通信的保护不足还可能暴露账户信息。 成功利用该漏洞可能使未经身份验证的相邻网络攻击者执行未授权的设备管理操作，并破坏合法用户的控制权。在特定条件下，账户相关信息也可能被暴露，进而可能导致关联云账户被入侵。

CVSS 8.7 · High EPSS 0.27% · P18

Affected Version Matrix 24

VendorProduct Version RangeStatus
TP-Link Systems Inc. EP10 v1 < 1.1.1 Build 250908 Rel.112508 affected
TP-Link Systems Inc. EP40 v1 < 1.1.0 Build 250225 Rel.171723 affected
TP-Link Systems Inc. EP40A v1 < 1.1.1 Build 250908 Rel.112526 affected
TP-Link Systems Inc. ES20M v1 < 1.1.6 Build 250522 Rel.210254 affected
TP-Link Systems Inc. HS103 v5 < 1.1.3 Build 250908 Rel.112508 affected
TP-Link Systems Inc. HS200 v5 < 1.1.2 Build 241220 Rel.165559 affected
TP-Link Systems Inc. HS210 v3 < 1.1.0 Build 250225 Rel.163425 affected
TP-Link Systems Inc. HS220 v3 < 1.1.4 Build 241220 Rel.171050 affected
TP-Link Systems Inc. HS300 v2 < 1.1.2 Build 241220 Rel.171333 affected
TP-Link Systems Inc. KL110 v4 < 1.1.1 Build 260710 Rel.082646 affected
TP-Link Systems Inc. KL125 v4 < 1.1.1 Build 260710 Rel.082646 affected
TP-Link Systems Inc. KL135 v2 < 1.1.1 Build 260710 Rel.082646 affected
TP-Link Systems Inc. KL420L5 v1 < 1.4.2 Build 260605 Rel.035033 affected
TP-Link Systems Inc. KP115 v1 < 1.1.1 Build 250908 Rel.112945 affected
TP-Link Systems Inc. KP200 v3 < 1.1.0 Build 250225 Rel.171724 affected
TP-Link Systems Inc. KP303 v2 < 1.1.2 Build 241220 Rel.173321 affected
TP-Link Systems Inc. KP400 v3 < 1.1.0 Build 250225 Rel.171723 affected
TP-Link Systems Inc. KP401 v1 < 1.1.2 Build 241223 Rel.094434 affected
TP-Link Systems Inc. KP405 v1 < 1.1.0 Build 250225 Rel.174632 affected
TP-Link Systems Inc. KS200 v1 < 1.1.2 Build 241223 Rel.103857 affected
TP-Link Systems Inc. KS200M v1 < 1.1.4 Build 241223 Rel.104700 affected
TP-Link Systems Inc. KS220 v1 < 1.1.3 Build 241223 Rel.105515 affected
TP-Link Systems Inc. KS220M v1 < 1.1.6 Build 250522 Rel.210254 affected
TP-Link Systems Inc. KS230 KIT v2 < 1.1.4 Build 241223 Rel.105830 affected
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I. Basic Information for CVE-2026-108473

Vulnerability Information
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Vulnerability Title
Improper Authentication and Credential Exposure in Multiple TP-Link Kasa Devices
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
TP-Link Systems Inc. HS103 v5 0 ~ 1.1.3 Build 250908 Rel.112508 -
TP-Link Systems Inc. EP10 v1 0 ~ 1.1.1 Build 250908 Rel.112508 -
TP-Link Systems Inc. EP40 v1 0 ~ 1.1.0 Build 250225 Rel.171723 -
TP-Link Systems Inc. HS200 v5 0 ~ 1.1.2 Build 241220 Rel.165559 -
TP-Link Systems Inc. KP401 v1 0 ~ 1.1.2 Build 241223 Rel.094434 -
TP-Link Systems Inc. KS230 KIT v2 0 ~ 1.1.4 Build 241223 Rel.105830 -
TP-Link Systems Inc. KP405 v1 0 ~ 1.1.0 Build 250225 Rel.174632 -
TP-Link Systems Inc. HS220 v3 0 ~ 1.1.4 Build 241220 Rel.171050 -
TP-Link Systems Inc. KP115 v1 0 ~ 1.1.1 Build 250908 Rel.112945 -
TP-Link Systems Inc. HS210 v3 0 ~ 1.1.0 Build 250225 Rel.163425 -
TP-Link Systems Inc. HS300 v2 0 ~ 1.1.2 Build 241220 Rel.171333 -
TP-Link Systems Inc. KP200 v3 0 ~ 1.1.0 Build 250225 Rel.171724 -
TP-Link Systems Inc. KP303 v2 0 ~ 1.1.2 Build 241220 Rel.173321 -
TP-Link Systems Inc. KS200 v1 0 ~ 1.1.2 Build 241223 Rel.103857 -
TP-Link Systems Inc. EP40A v1 0 ~ 1.1.1 Build 250908 Rel.112526 -
TP-Link Systems Inc. KS220 v1 0 ~ 1.1.3 Build 241223 Rel.105515 -
TP-Link Systems Inc. KS200M v1 0 ~ 1.1.4 Build 241223 Rel.104700 -
TP-Link Systems Inc. ES20M v1 0 ~ 1.1.6 Build 250522 Rel.210254 -
TP-Link Systems Inc. KS220M v1 0 ~ 1.1.6 Build 250522 Rel.210254 -
TP-Link Systems Inc. KP400 v3 0 ~ 1.1.0 Build 250225 Rel.171723 -
TP-Link Systems Inc. KL125 v4 0 ~ 1.1.1 Build 260710 Rel.082646 -
TP-Link Systems Inc. KL135 v2 0 ~ 1.1.1 Build 260710 Rel.082646 -
TP-Link Systems Inc. KL110 v4 0 ~ 1.1.1 Build 260710 Rel.082646 -
TP-Link Systems Inc. KL420L5 v1 0 ~ 1.4.2 Build 260605 Rel.035033 -

II. Public POCs for CVE-2026-108473

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III. Intelligence Information for CVE-2026-108473

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Vendor Pages for CVE-2026-108473 (2)

Other References for CVE-2026-108473 (1)

Same Patch Batch · TP-Link Systems Inc. · 2026-10-14 · 3 CVEs total

CVE-2026-107795 7.5 HIGH Improper Authorization in TP-Link Omada Controller TLS Certificate and Private Key Managem
CVE-2026-109506 5.9 MEDIUM Improper Authentication in Multiple TP-Link WiFi Repeaters

IV. Related Vulnerabilities

Same vendor: TP-Link Systems Inc.
Same weakness: CWE-306

V. Comments for CVE-2026-108473

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