CVE-2026-19847 HIGH

CVE-2026-19847: TOTOLINK A800R wps.so cstecgi.cgi setWiFiWpsConfig stack-based overflow

Vendor Totolink
Product A800R
Weakness CWE-121
Published August 14, 2026
Last update August 14, 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 security flaw has been discovered in TOTOLINK A800R 4.1.2cu.5137_B20200730. Affected is the function setWiFiWpsConfig of the file /cgi-bin/cstecgi.cgi of the component wps.so. The manipulation of the argument pin results in stack-based buffer overflow. The attack can be launched remotely. The exploit has been released to the public and may be used for attacks.

Key dates

02Disclosure timeline

August 14, 2026 CVE published