CVE-2026-1143

7.4 highEPSS 0.8%

High (7.4) in totolink a3700r firmware. EPSS 0.8% chance of exploitation in the next 30 days.

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.

Severity

CVSS 4.0

7.4 high

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

CVSS 3.1

8.8 high

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

EPSS: 0.8% chance of exploitation in the next 30 days; higher than 55% of CVEs (scores of 2026-10-31)
CWEs: CWE-119, CWE-120
Published: 2026-01-19
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

totolink:a3700r_firmware

References

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

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