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Vulnerabilities CVE-2026-19811

CVE-2026-19811

High
Open
TLP:CLEAR

TOTOLINK A800R firewall.so cstecgi.cgi setIpQosRules stack-based overflow

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Description

A security flaw has been discovered in TOTOLINK A800R 4.1.2cu.5137_B20200730. The impacted element is the function setIpQosRules of the file /cgi-bin/cstecgi.cgi of the component firewall.so. The manipulation of the argument Comment results in stack-based buffer overflow. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks.

Details

CVSS Score
8.7
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
Confidence
90%
Published
Aug 14, 2026
Last Modified
Aug 14, 2026
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