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Vulnerability record · CVE-2026-24112 · published 2 March 2026

CVE-2026-24112: Tenda w20e firmware classic buffer overflow vulnerability

Tenda · W20e Firmware

An issue was discovered in Tenda W20E V4.0br_V15.11.0.6. Attackers may exploit the vulnerability by specifying the value of `userInfo`. When `userInfo` is passed into the `addWewifiWhiteUser` function and processed by `sscanf` without size validation, it could lead to a buffer overflow vulnerability.

9.8 CVSS 3.1 Critical EPSS 0.53% · top 57.5% CWE-120 · Classic buffer overflow
9.8CVSS 3.1 base score
0.53%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 1 tagged exploit
17 Jun 2026Last modified by NVD

Description

An issue was discovered in Tenda W20E V4.0br_V15.11.0.6. Attackers may exploit the vulnerability by specifying the value of `userInfo`. When `userInfo` is passed into the `addWewifiWhiteUser` function and processed by `sscanf` without size validation, it could lead to a buffer overflow vulnerability.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

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

References

LinkTags
https://github.com/akuma-QAQ/CVEreport/tree/main/D-link/CVE-2026-24112 ExploitThird Party Advisory
https://www.tenda.com.cn/material/show/2707 Product

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Related vulnerabilities

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

9.8CVE-2026-24110Tenda w20e firmware classic buffer overflow vulnerabilityAn issue was discovered in Tenda W20E V4.0br_V15.11.0.6. Attackers may send overly long `addDhcpRules` data. When these rules enter the `addDhcpRule`…EPSS 0.43%9.8CVE-2026-24107Tenda w20e firmware code injection vulnerabilityAn issue was discovered in Tenda W20E V4.0br_V15.11.0.6. Failure to validate the value of `usbPartitionName`, which is directly used in `doSystemCmd`…EPSS 2.2%9.8CVE-2026-24108Tenda w20e firmware classic buffer overflow vulnerabilityAn issue was discovered in Tenda W20E V4.0br_V15.11.0.6. Attackers may exploit the vulnerability by controlling the value of `nptr`. When this value …EPSS 0.65%9.8CVE-2026-24109Tenda w20e firmware classic buffer overflow vulnerabilityAn issue was discovered in Tenda W20E V4.0br_V15.11.0.6. Attackers may exploit the vulnerability by controlling the value of `picName`. When this val…EPSS 0.65%9.8CVE-2026-24111Tenda w20e firmware classic buffer overflow vulnerabilityAn issue was discovered in Tenda W20E V4.0br_V15.11.0.6. Attackers may exploit the vulnerability by specifying the value of `userInfo`. When `userInf…EPSS 0.65%9.8CVE-2026-24113Tenda w20e firmware classic buffer overflow vulnerabilityAn issue was discovered in Tenda W20E V4.0br_V15.11.0.6. Attackers may exploit the vulnerability by controlling the value of `nptr`. When this value …EPSS 0.65%9.8CVE-2026-24114Tenda w20e firmware classic buffer overflow vulnerabilityAn issue was discovered in Tenda W20E V4.0br_V15.11.0.6. Failure to validate `pPortMapIndex` may lead to buffer overflows when using `strcpy`.EPSS 0.62%9.8CVE-2026-24115Tenda w20e firmware classic buffer overflow vulnerabilityAn issue was discovered in Tenda W20E V4.0br_V15.11.0.6. Failure to validate the sizes of `gstup` and `gstdwn` before concatenating them into `gstrul…EPSS 0.69%

Source: NIST National Vulnerability Database (record CVE-2026-24112), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.