Vulnerability Database

289,871

Total vulnerabilities in the database

CVE-2021-40556

A stack overflow vulnerability exists in the httpd service in ASUS RT-AX56U Router Version 3.0.0.4.386.44266. This vulnerability is caused by the strcat function called by "caupload" input handle function allowing the user to enter 0xFFFF bytes into the stack. This vulnerability allows an attacker to execute commands remotely. The vulnerability requires authentication.

  • Published: Oct 6, 2022
  • Updated: Apr 14, 2023
  • CVE: CVE-2021-40556
  • Severity: High
  • Exploit:

CVSS v3:

  • Severity: High
  • Score: 8.8
  • AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWEs:

Software From Fixed in
asus / rt-ax56u_firmware 3.0.0.4.386.44266 3.0.0.4.386.44266.x