CVE-2026-7747

CRITICAL

Totolink N300RH Parameter cstecgi.cgi loginauth buffer overflow

Title source: cna
STIX 2.1

Description

A security flaw has been discovered in Totolink N300RH 3.2.4-B20220812. Affected by this vulnerability is the function loginauth of the file /cgi-bin/cstecgi.cgi of the component Parameter Handler. Performing a manipulation of the argument Password results in buffer overflow. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks.

References (5)

Core 5
Core References
Vdb Entry, Technical Description vdb-entry technical-description
VDB-360922 | Totolink N300RH Parameter cstecgi.cgi loginauth buffer overflow
https://vuldb.com/vuln/360922
Signature, Permissions Required signature permissions-required
VDB-360922 | CTI Indicators (IOB, IOC, IOA)
https://vuldb.com/vuln/360922/cti
Third Party Advisory third-party-advisory
Submit #807201 | Totolink N300RH N300RH V3_Firmware V3.2.4-B20220812 Buffer Overflow
https://vuldb.com/submit/807201
Product product
https://www.totolink.net/

Scores

CVSS v3 9.8
EPSS 0.0010
EPSS Percentile 27.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact total

Details

CWE
CWE-119 CWE-120
Status published
Products (1)
Totolink/N300RH 3.2.4-B20220812
Published May 04, 2026
Tracked Since May 04, 2026