PT-2026-28701 · Totolink · Totolink Lr350

Wxhwxhwxh_Mie · CVE-2026-4976 · Published 2026-03-12 · Updated 2026-03-28

Positive Technologies (AI Summary)

CVSS v2.0

9.0

High

Base vector

AV:N/AC:L/Au:S/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Totolink LR350 version 9.3.5u.6369 B20220309

Description A buffer overflow issue exists in the setWiFiGuestCfg function of the /cgi-bin/cstecgi.cgi file. The issue is triggered by manipulating the ssid argument. The exploit for this issue has been made public and could be used to launch remote attacks.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Buffer Overflow

Weakness Enumeration

CWE-119

CWE-120

Related Identifiers

BDU:2026-07611

CVE-2026-4976

Affected Products

Totolink Lr350

References · 12

• 🔥 https://lavender-bicycle-a5a.notion.site/TOTOLINK-LR350-setWiFiGuestCfg-32153a41781f8048a918c1c78e95064e?source=copy_link · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-4976 · Security Note
• https://bdu.fstec.ru/vul/2026-07611 · Security Note
• https://vuldb.com/?ctiid.353863 · Note
• https://twitter.com/TheHackerWire/status/2037645122532458746 · Twitter Post
• https://twitter.com/CveFindCom/status/2037646693974372633 · Twitter Post
• https://lavender-bicycle-a5a.notion.site/TOTOLINK-LR350-setWiFiGuestCfg-32153a41781f8048a918c1c78e95064e · Note
• https://twitter.com/vuldb/status/2037508751876600205 · Twitter Post
• https://vuldb.com/?id.353863 · Note
• https://totolink.net · Note
• https://vuldb.com/?submit.778274 · Note
• https://twitter.com/CVEnew/status/2037719397088031036 · Twitter Post