What’s Vulnerable › Vulnerabilities
CVE-2021-45756
- Severity: critical (CVSS 9.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 1.2% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2022-03-23 · updated 2026-07-09
- Weakness: CWE-120
Description
Asus RT-AC68U <3.0.0.4.385.20633 and RT-AC5300 <3.0.0.4.384.82072 are affected by a buffer overflow in blocking_request.cgi.
Affected products
- ASUS Rt-Ac5300 Firmware: before 3.0.0.4.384.82072 — fixed in 3.0.0.4.384.82072
- ASUS Japan Inc. RT-AC68U: before 3.0.0.4.385.20633 — fixed in 3.0.0.4.385.20633
How to fix
Upgrade to a fixed version: ASUS Rt-Ac5300 Firmware 3.0.0.4.384.82072; ASUS Japan Inc. RT-AC68U 3.0.0.4.385.20633. Check the vendor advisory for mitigations.
References
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