CVE-2026-24110

9.8 criticalEPSS 0.5%

Critical (9.8) in tenda w20e firmware. EPSS 0.5% chance of exploitation in the next 30 days.

An 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` function and are processed by `ret = sscanf(pRule, " %d\t%[^\t]\t%[^\n\r\t]", &dhcpsIndex, dhcpsIP, dhcpsMac);`, the lack of size validation for the rules could lead to buffer overflows in `dhcpsIndex`, `dhcpsIP`, and `dhcpsMac`.

Severity

CVSS 3.1

9.8 critical

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

EPSS: 0.5% chance of exploitation in the next 30 days; higher than 41% of CVEs (scores of 2026-10-31)
CWE: CWE-120
Published: 2026-03-02
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

tenda:w20e_firmware

References

https://github.com/akuma-QAQ/CVEreport/tree/main/D-link/CVE-2026-24110
https://www.tenda.com.cn/material/show/2707

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