CVE-2021-45756
CVSS v3
9.8
CRITICAL
EPSS Score
1.2 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
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.
Technical details
- Published
- 2022-03-23
Frequently asked questions
What is CVE-2021-45756?
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.
Is CVE-2021-45756 actively exploited?
Active exploitation of CVE-2021-45756 has not been confirmed. Its EPSS score was 1.2% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2021-45756?
CVE-2021-45756 has a CVSS v3 base score of 9.8 (CRITICAL severity).
Is CVE-2021-45756 affecting your environment?
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