What’s Vulnerable › Vulnerabilities

CVE-2021-44158: ASUS RT-AX56U Router - Stack-based buffer overflow

• Severity: high (CVSS 8.0 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-01-03 · updated 2026-06-17
• Weakness: CWE-121

Description

ASUS RT-AX56U Wi-Fi Router is vulnerable to stack-based buffer overflow due to improper validation for httpd parameter length. An authenticated local area network attacker can launch arbitrary code execution to control the system or disrupt service.

Affected products

• ASUS RT-AX56U: 3.0.0.4.386.44266

References

• https://www.twcert.org.tw/tw/cp-132-5431-d23be-1.html
• https://www.twcert.org.tw/tw/cp-132-5431-d23be-1.html

Get alerted when CVE-2021-44158 or the next vulnerability affects your stack