CVE-2026-7750CWE-119CWE-120

Totolink N300RH POST Request cstecgi.cgi setMacFilterRules buffer overflow

High · published May 4, 2026

CVSS v4.0
8.7
EPSS
1%
Percentile
55.8
In the wild
Unconfirmed
What it is

A vulnerability was detected in Totolink N300RH 3.2.4-B20220812. This vulnerability affects the function setMacFilterRules of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. The manipulation of the argument mac_address results in buffer overflow. The attack may be launched remotely. The exploit is now public and may be used.

The record
Technical detail
CVSS v4.0
8.7 · HIGH
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
EPSS
0.00792 · 55.8th percentile
Weaknesses
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer; CWE-120 · Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Published
2026-05-04T09:00Z
EPSS history
Timeline
  • 04 MAY 09:00Z
    Totolink N300RH POST Request cstecgi.cgi setMacFilterRules buffer overflow
    cvelistv5