VulnerabilityAnalyzed
CVE-2026-24110
Attackers may send overly long `addDhcpRules` data.
CRITICAL 9.8EPSS 0.43%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.43%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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`.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.43% probability · 36th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-120
- Affected
- tenda/w20e firmware
- Source
- cve@mitre.org
References
- https://github.com/akuma-QAQ/CVEreport/tree/main/D-link/CVE-2026-24110Exploit, Third Party Advisory
- https://www.tenda.com.cn/material/show/2707Product
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.