CVEvulnerability

CVE-2022-43636

8.8 HIGH Published 2023-03-29 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2023-03-29
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
8.8 HIGH — CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 3.0 ([email protected])
7.5 HIGH — CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-330

Description

This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of TP-Link TL-WR940N 6_211111 3.20.1(US) routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the httpd service, which listens on TCP port 80 by default. The issue results from the lack of sufficient randomness in the sequnce numbers used for session managment. An attacker can leverage this vulnerability to bypass authentication on the system. Was ZDI-CAN-18334.

Affected configurations

• tp-link tl-wr940n firmware 6 211111 3.20.1

Related

Weakness · CWE (1)

  • CWE-330 Use of Insufficiently Random Values weakness

References