CVE-2026-24436Network attack vector

Administrative credential brute force via unrestricted login attempts

Published Jan 26, 2026 · Updated Jan 26, 2026

Improper restriction of authentication attempts in Tenda W30E V2 through 16.01.0.19(5037) allows remote attackers to brute-force admin credentials. Authentication endpoints accept repeated credential guesses without rate limiting or account lockout, leaving administrative passwords open to unrestricted online guessing. Network access to the management authentication interface is sufficient; compromise occurs only if a valid administrator password is guessed.

CVSS severity9.2
Critical
EPSS probability0.44%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper restriction of authentication attempts in Tenda W30E V2 through 16.01.0.19(5037) allows remote attackers to brute-force admin credentials. Authentication endpoints accept repeated credential guesses without rate limiting or account lockout, leaving administrative passwords open to unrestricted online guessing. Network access to the management authentication interface is sufficient; compromise occurs only if a valid administrator password is guessed.

The record

CVE
CVE-2026-24436
Published
Jan 26, 2026
Updated
Jan 26, 2026
Vendor
Shenzhen Tenda Technology Co., Ltd.
Product
W30E
Classifications
CWE-307, T1110.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 26, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=16.01.0.19(5037)

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Shenzhen Tenda Technology Co., Ltd. · W30Eversion=0 <=16.01.0.19(5037)

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.2VulnCheckCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-307Improper Restriction of Excessive Authentication Attempts
T1110.001Password Guessing

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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