CVE-2023-6906 CRITICAL

CVE-2023-6906: Totolink A7100RU HTTP POST Request main buffer overflow

Vendor Totolink
Product A7100RU
Weakness CWE-120
Published December 18, 2023
Last update May 7, 2025
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CVSS base score

9.8/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

A vulnerability, which was classified as critical, was found in Totolink A7100RU 7.4cu.2313_B20191024. Affected is the function main of the file /cgi-bin/cstecgi.cgi?action=login of the component HTTP POST Request Handler. The manipulation of the argument flag with the input ie8 leads to buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-248268. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Key dates

02Disclosure timeline

December 18, 2023 CVE published
May 7, 2025 Record updated