CVE-2026-19845 HIGH

CVE-2026-19845: TOTOLINK A800R lan.so cstecgi.cgi setStaticDhcpConfig 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 vulnerability was determined in TOTOLINK A800R 4.1.2cu.5137_B20200730. This affects the function setStaticDhcpConfig of the file /cgi-bin/cstecgi.cgi of the component lan.so. Executing a manipulation of the argument Comment can lead to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been publicly disclosed and may be utilized.

Key dates

02Disclosure timeline

August 14, 2026 CVE published
August 14, 2026 Record updated