CVE-2026-7719 CRITICAL

CVE-2026-7719: Totolink WA300 POST Request cstecgi.cgi loginauth buffer overflow

Vendor Totolink
Product WA300
Weakness CWE-120
Published May 4, 2026
Last update May 5, 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 WA300 5.2cu.7112_B20190227. The affected element is the function loginauth of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. The manipulation of the argument http_host results in buffer overflow. The attack may be launched 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 5, 2026 Record updated