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CVE-2026-86300— Tenda AC9 Web Management R7WebsSecurityHandler improper authentication

Quick assessment

Affected
Tenda AC9
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.

在 Tenda AC9 15.03.05.14 中发现了一个漏洞。该漏洞影响 Web 管理组件中的 R7WebsSecurityHandler 函数。此漏洞会导致身份验证不当（improper authentication）。攻击者可能通过网络远程发起攻击。该漏洞的利用方法（exploit）已公开，可能被用于实际攻击。

CVSS 7.3 · High

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
Tenda AC9 15.03.05.14 affected
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I. Basic Information for CVE-2026-86300

Vulnerability Information
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Vulnerability Title
Tenda AC9 Web Management R7WebsSecurityHandler improper authentication
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw has been found in Tenda AC9 15.03.05.14. This impacts the function R7WebsSecurityHandler of the component Web Management. This manipulation causes improper authentication. The attack may be initiated remotely. The exploit has been published and may be used.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Tenda AC9 15.03.05.14 cpe:2.3:o:tenda:ac9_firmware:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-86300

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III. Intelligence Information for CVE-2026-86300

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Vendor Advisories for CVE-2026-86300 (1)

Proof of Concept for CVE-2026-86300 (2)

News Coverage for CVE-2026-86300 (1)

Other References for CVE-2026-86300 (3)

IV. Related Vulnerabilities

Same product: AC9
Same vendor: Tenda
Same weakness: CWE-287

V. Comments for CVE-2026-86300

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