CVE-2026-24110

An issue was discovered in Tenda W20E V4.0br_V15.11.0.6

Critical · published March 2, 2026

CVSS v3.1
9.8
EPSS
0%
Percentile
37.4
In the wild
Unconfirmed
What it is

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`.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00442 · 37.4th percentile
Published
2026-03-02T00:00Z
EPSS history
Timeline
  • 02 MAR 00:00Z
    An issue was discovered in Tenda W20E V4.0br_V15.11.0.6
    cvelistv5