Critical severity · published Mar 2, 2026
CVE-2026-24110
An issue was discovered in Tenda W20E V4.0br_V15.11.0.6
9.8
CVSS
0.4%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 38% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WF
W20e Firmware · Tenda
15.11.0.6 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-24110
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-24110
Exploit
https://github.com/akuma-QAQ/CVEreport/tree/main/D-link/CVE-2026-24110
Product
https://www.tenda.com.cn/material/show/2707
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