CVE-2026-1143
HIGHTOTOLINK A3700R 9.1.2u.5822_B20200513 - Buffer Overflow via setWiFiEasyGuestCfg ssid Parameter
Title source: llmDescription
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.
References (5)
Core 5
Core References
Third Party Advisory, VDB Entry vdb-entry
technical-description
https://vuldb.com/?id.341735
Permissions Required, VDB Entry signature
permissions-required
https://vuldb.com/?ctiid.341735
Third Party Advisory, VDB Entry third-party-advisory
https://vuldb.com/?submit.735502
Exploit, Third Party Advisory exploit
https://lavender-bicycle-a5a.notion.site/TOTOLINK-A3700R-setWiFiEasyGuestCfg-2e353a41781f8057a244ead07d5eaaff?source=copy_link
Product product
https://www.totolink.net/
Scores
CVSS v3
8.8
EPSS
0.0066
EPSS Percentile
46.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
total
Details
CWE
CWE-119
CWE-120
Status
published
Products (1)
totolink/a3700r_firmware
9.1.2u.5822_b20200513
Published
Jan 19, 2026
Tracked Since
Feb 18, 2026