CVE-2021-40556

8.8HIGH

Key Information

Vendor
Asus
Status
Rt-ax56u Firmware
Vendor
CVE Published:
6 October 2022

Summary

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.

References

https://www.asus.com/tw/Networking-IoT-Servers/WiFi-Route...
https://x1ng.top/2021/10/14/ASUS%E6%A0%88%E6%BA%A2%E5%87%...

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Collectors

NVD DatabaseMitre Database
.