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W30e Firmware CVE-2026-24436

CRITICAL
Improper Restriction of Excessive Authentication Attempts (CWE-307)
2026-01-26 disclosure@vulncheck.com
Authentication Bypass W30e Firmware
9.8
CVSS 3.1
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CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
Analysis Generated
Mar 12, 2026 - 22:00 vuln.today
CVE Published
Jan 26, 2026 - 18:16 nvd
CRITICAL 9.8

DescriptionNVD

Shenzhen Tenda W30E V2 firmware versions up to and including V16.01.0.19(5037) do not enforce rate limiting or account lockout mechanisms on authentication endpoints. This allows attackers to perform unrestricted brute-force attempts against administrative credentials.

AnalysisAI

Missing rate limiting and account lockout on Tenda W30E V2 authentication endpoints. Brute-force attacks are unrestricted.

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RemediationAI

Within 24 hours: Inventory all Tenda W30E V2 devices and firmware versions in your environment; change all default and administrative credentials to complex, unique passwords; restrict administrative interface access to trusted IP ranges only. Within 7 days: Isolate affected devices to a segmented network if patching is not immediately possible; monitor access logs for brute-force attempts; disable remote management features if not operationally critical. …

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CVE-2026-24436 vulnerability details – vuln.today
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