CVE-2026-1143

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.
Configurations

Configuration 1 (hide)

AND
cpe:2.3:o:totolink:a3700r_firmware:9.1.2u.5822_b20200513:*:*:*:*:*:*:*
cpe:2.3:h:totolink:a3700r:-:*:*:*:*:*:*:*

History

29 Jan 2026, 18:31

Type Values Removed Values Added
References () https://lavender-bicycle-a5a.notion.site/TOTOLINK-A3700R-setWiFiEasyGuestCfg-2e353a41781f8057a244ead07d5eaaff?source=copy_link - () https://lavender-bicycle-a5a.notion.site/TOTOLINK-A3700R-setWiFiEasyGuestCfg-2e353a41781f8057a244ead07d5eaaff?source=copy_link - Exploit, Third Party Advisory
References () https://vuldb.com/?ctiid.341735 - () https://vuldb.com/?ctiid.341735 - Permissions Required, VDB Entry
References () https://vuldb.com/?id.341735 - () https://vuldb.com/?id.341735 - Third Party Advisory, VDB Entry
References () https://vuldb.com/?submit.735502 - () https://vuldb.com/?submit.735502 - Third Party Advisory, VDB Entry
References () https://www.totolink.net/ - () https://www.totolink.net/ - Product
First Time Totolink a3700r Firmware
Totolink a3700r
Totolink
CPE cpe:2.3:o:totolink:a3700r_firmware:9.1.2u.5822_b20200513:*:*:*:*:*:*:*
cpe:2.3:h:totolink:a3700r:-:*:*:*:*:*:*:*

19 Jan 2026, 07:16

Type Values Removed Values Added
New CVE

Information

Published : 2026-01-19 07:16

Updated : 2026-01-29 18:31


NVD link : CVE-2026-1143

Mitre link : CVE-2026-1143

CVE.ORG link : CVE-2026-1143


JSON object : View

Products Affected

totolink

  • a3700r
  • a3700r_firmware
CWE
CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-120

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')