CVE-2026-86300

Tenda AC9 Web Management R7WebsSecurityHandler improper authentication

HIGH
7.3
CVSS Score
Published: September 7, 2026 at 11:30 AM UTC
Updated: September 8, 2026 at 04:18 PM UTC
1 product affected across 1 vendorAC9 Firmware

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Severity
HIGH7.3
Exploit prediction
EPSS 0.8%
SSVC
PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (9)

VDB EntryTechnical Description
Source: cverecord
https://vuldb.com/vuln/399464
SignaturePermissions Required
Source: cverecord
https://vuldb.com/vuln/399464/cti
Third Party Advisory
Source: cverecord
https://vuldb.com/cve/CVE-2026-86300
Third Party Advisory
Source: cverecord
https://vuldb.com/submit/906606
Third Party Advisory
Source: cverecord
https://vuldb.com/submit/906607
Third Party Advisory
Source: cverecord
https://vuldb.com/submit/906608

SSVC — Action Prioritization

SSVCPoCAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.3HIGHVulDB
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-287

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