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CVE-2026-1143

TOTOLINK A3700R cstecgi.cgi setWiFiEasyGuestCfg buffer overflow

CVSS 8.7 HIGHEPSS 0.7%CWE-119CWE-120
Vexday Risk Score
21Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS 8.7EPSS 0.7%KEV nãoPoC —Nuclei —Metasploit —Patch —
Lifecycle
19 Jan 2026Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
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.
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
Affected products
TOTOLINK · A3700R

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References
https://lavender-bicycle-a5a.notion.site/TOTOLINK-A3700R-setWiFiEasyGuestCfg-2e353a41781f8057a244ead07d5eaaff?source=copy_linkhttps://vuldb.com/?ctiid.341735https://vuldb.com/?id.341735https://vuldb.com/?submit.735502https://www.totolink.net/