CVE-2026-7747 CRITICAL

CVE-2026-7747: Totolink N300RH Parameter cstecgi.cgi loginauth buffer overflow

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

CVSS base score

9.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P

What the vulnerability does

01Description

A security flaw has been discovered in Totolink N300RH 3.2.4-B20220812. Affected by this vulnerability is the function loginauth of the file /cgi-bin/cstecgi.cgi of the component Parameter Handler. Performing a manipulation of the argument Password results in buffer overflow. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks.

Key dates

02Disclosure timeline

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