CVE-2026-7750 HIGH

CVE-2026-7750: Totolink N300RH POST Request cstecgi.cgi setMacFilterRules buffer overflow

Vendor Totolink
Product N300RH
Weakness CWE-120
Published May 4, 2026
Last update May 5, 2026
View on NVD All CVEs

CVSS base score

8.7/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality —
Integrity —

CVSS 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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

May 4, 2026 CVE published
May 5, 2026 Record updated