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Vulnerability record · CVE-2026-24436 · published 26 January 2026

CVE-2026-24436: Tenda w30e firmware improper restriction of authentication attempts vulnerability

Tenda · W30e Firmware

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.

9.2 CVSS 4.0 Critical EPSS 0.47% · top 61.8% CWE-307 · Improper restriction of authentication attempts
9.2CVSS 4.0 base score
0.47%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

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.

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.tendacn.com/product/W30E Product
https://www.vulncheck.com/advisories/tenda-w30e-v2-lacks-rate-limiting-on-authentication Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2026-38835Tenda w30e firmware command injection vulnerabilityTenda W30E V2.0 V16.01.0.21 was found to contain a command injection vulnerability in the formSetUSBPartitionUmount function via the usbPartitionName…EPSS 2.6%9.8CVE-2025-57085Tenda w30e firmware stack-based buffer overflow vulnerabilityTenda W30E V16.01.0.19 (5037) was discovered to contain a stack overflow in the v17 parameter in the UploadCfg function. This vulnerability allows at…EPSS 0.47%9.8CVE-2024-32286Tenda w30e firmware out-of-bounds read vulnerabilityTenda W30E v1.0 V1.0.1.25(633) firmware has a stack overflow vulnerability located via the page parameter in the fromVirtualSer function.EPSS 0.78%9.8CVE-2023-49404Tenda w30e firmware out-of-bounds write vulnerabilityTenda W30E V16.01.0.12(4843) was discovered to contain a stack overflow via the function formAdvancedSetListSet.EPSS 0.92%9.8CVE-2023-49405Tenda w30e firmware out-of-bounds write vulnerabilityTenda W30E V16.01.0.12(4843) was discovered to contain a stack overflow via the function UploadCfg.EPSS 0.92%9.8CVE-2023-49406Tenda w30e firmware vulnerabilityTenda W30E V16.01.0.12(4843) was discovered to contain a Command Execution vulnerability via the function /goform/telnet.EPSS 1.5%9.8CVE-2023-49411Tenda w30e firmware out-of-bounds write vulnerabilityTenda W30E V16.01.0.12(4843) contains a stack overflow vulnerability via the function formDeleteMeshNode.EPSS 0.92%9.8CVE-2023-49402Tenda w30e firmware out-of-bounds write vulnerabilityTenda W30E V16.01.0.12(4843) was discovered to contain a stack overflow via the function localMsg.EPSS 0.92%

Source: NIST National Vulnerability Database (record CVE-2026-24436), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.