CVE-2026-1143

HighCVSS 8.8/10Last modified Jun 17, 2026

Description

A weakness has been identified in TOTOLINK A3700R 9.1.2u.5822_B20200513. This affects the function setWiFiEasyGuestCfg of the file /cgi-bin/cstecgi.cgi. Executing a manipulation of the argument ssid can lead to buffer overflow. The attack may be launched remotely. The exploit has been made available to the public and could be used for attacks.

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-119 CWE-120

Affected software

Vendor	Product	Versions
TOTOLINK	A3700R	9.1.2u.5822_B20200513

References

https://lavender-bicycle-a5a.notion.site/TOTOLINK-A3700R-setWiFiEasyGuestCfg-2e353a41781f8057a244ead07d5eaaff?source=copy_linkExploit, Third Party Advisory
https://vuldb.com/?ctiid.341735Permissions Required, VDB Entry
https://vuldb.com/?id.341735Third Party Advisory, VDB Entry
https://vuldb.com/?submit.735502Third Party Advisory, VDB Entry
https://www.totolink.net/Product

Timeline

Published: Jan 19, 2026
Last modified: Jun 17, 2026
NVD status: Analyzed

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