PT-2026-3439 · Totolink · Totolink Lr350

Wxhwxhwxh_Mie · Published 2026-01-10 · Updated 2026-01-29 · CVE-2026-1155

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 setWiFiEasyGuestCfg function located in the /cgi-bin/cstecgi.cgi file. The manipulation of the ssid argument can trigger this issue, potentially allowing for remote attacks. The exploit for this issue has been publicly released.

Recommendations Update to a newer version that contains a fix for this vulnerability. As a temporary workaround, consider restricting access to the /cgi-bin/cstecgi.cgi file.

Exploit

Fix

Buffer Overflow

Weakness Enumeration

CWE-120

CWE-119

Related Identifiers

BDU:2026-00608

CVE-2026-1155

Affected Products

Totolink Lr350

References · 15

• 🔥 https://lavender-bicycle-a5a.notion.site/TOTOLINK-LR350-setWiFiEasyGuestCfg-2e453a41781f8034bae3d1a11066a8fb?source=copy_link · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-1155 · Security Note
• https://bdu.fstec.ru/vul/2026-00608 · Security Note
• https://osv.dev/vulnerability/CVE-2026-1155 · Vendor Advisory
• https://twitter.com/cracbot/status/2015016791022752173 · Twitter Post
• https://t.me/cveNotify/150303 · Telegram Post
• https://vuldb.com/?ctiid.341749 · Note
• https://lavender-bicycle-a5a.notion.site/TOTOLINK-LR350-setWiFiEasyGuestCfg-2e453a41781f8034bae3d1a11066a8fb · Note
• https://vuldb.com/?submit.735718 · Note
• https://twitter.com/CveFindCom/status/2013244849927987635 · Twitter Post
• https://vuldb.com/?id.341749 · Note
• https://totolink.net · Note
• https://twitter.com/VulmonFeeds/status/2013252616298353148 · Twitter Post
• https://twitter.com/TheHackerWire/status/2013243325852377171 · Twitter Post
• https://twitter.com/CVEnew/status/2013243595382276170 · Twitter Post