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Description

A vulnerability was found in Totolink LR350 9.3.5u.6369_B20220309. This vulnerability affects the function setWiFiGuestCfg of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument ssid results in buffer overflow. The attack can be launched remotely. The exploit has been made public and could be used.

PUBLISHED Reserved 2026-03-27 | Published 2026-03-27 | Updated 2026-03-30 | Assigner VulDB




HIGH: 8.7CVSS: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
HIGH: 8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
HIGH: 8.8CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
9.0AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR

Problem types

Buffer Overflow

Memory Corruption

Product status

9.3.5u.6369_B20220309
affected

Timeline

2026-03-27:Advisory disclosed
2026-03-27:VulDB entry created
2026-03-27:VulDB entry last update

Credits

wxhwxhwxh_mie (VulDB User) reporter

References

vuldb.com/?id.353863 (VDB-353863 | Totolink LR350 cstecgi.cgi setWiFiGuestCfg buffer overflow) vdb-entry technical-description

vuldb.com/?ctiid.353863 (VDB-353863 | CTI Indicators (IOB, IOC, IOA)) signature permissions-required

vuldb.com/?submit.778274 (Submit #778274 | TOTOLINK LR350 LR350 V9.3.5u.6369_B20220309 Buffer Overflow) third-party-advisory

lavender-bicycle-a5a.notion.site/...e95064e?source=copy_link exploit

www.totolink.net/ product

cve.org (CVE-2026-4976)

nvd.nist.gov (CVE-2026-4976)

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