VULNERABILITY INTELLIGENCE

CVE-2022-0650

CVSS score8 HIGH
EPSS probability0.72%
CISA KEVNot currently listed
Published2023-03-28
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Description

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of TP-Link TL-WR940N 3.20.1 Build 200316 Rel.34392n (5553) routers. Authentication is 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 proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-13993.

Weakness classification

  • CWE-121: Stack-based Buffer Overflow
  • CWE-787: Out-of-bounds Write

Primary references