CVE-2026-4976

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.

CVSS v3 8.8 HIGH
CVSS v2.0 9.0 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

9.0^/10

CVSS v2.0 : HIGH

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

Exploitability : 8.0 / Impact : 10.0

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://lavender-bicycle-a5a.notion.site/TOTOLINK-LR350-setWiFiGuestCfg-32153a41781f8048a918c1c78e95064e?source=copy_link	Exploit Third Party Advisory
https://vuldb.com/?ctiid.353863	Permissions Required VDB Entry
https://vuldb.com/?id.353863	Third Party Advisory VDB Entry
https://vuldb.com/?submit.778274	Third Party Advisory VDB Entry
https://www.totolink.net/	Product

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:totolink:lr350_firmware:9.3.5u.6369_b20220309:*:*:*:*:*:*:*

cpe:2.3:h:totolink:lr350:-:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-03-27 21:17

Updated : 2026-06-17 10:57

NVD link : CVE-2026-4976

Mitre link : CVE-2026-4976

CVE.ORG link : CVE-2026-4976

JSON object : View

Products Affected

totolink

lr350
lr350_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')

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