CVE-2021-45757

Name: CVE-2021-45757
Creator: NVD / NIST
Published: 2022-03-23T11:15:08.203+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.78%

Last modified Jun 17, 2026

CVE-2021-45757 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. ASUS AC68U <=3.0.0.4.385.20852 is affected by a buffer overflow in blocking.cgi, which may cause a denial of service (DoS).. EPSS estimates a 1.78% chance of exploitation in the next 30 days.

Description

ASUS AC68U <=3.0.0.4.385.20852 is affected by a buffer overflow in blocking.cgi, which may cause a denial of service (DoS).

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

1.78%

75.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-120

Affected Software

Vendor	Product	Versions
Asus	Rt-Ac68u Firmware	<= 3.0.0.4.385.20852

References

http://ac68u.comBroken Link, URL Repurposed
http://asus.comVendor Advisory
https://github.com/IBUILI/AsusExploit, Third Party Advisory
http://ac68u.comBroken Link, URL Repurposed
http://asus.comVendor Advisory
https://github.com/IBUILI/AsusExploit, Third Party Advisory

Timeline

Published: Mar 23, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-45757?

ASUS AC68U <=3.0.0.4.385.20852 is affected by a buffer overflow in blocking.cgi, which may cause a denial of service (DoS).

How severe is CVE-2021-45757?

CVE-2021-45757 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.78% probability of exploitation in the next 30 days.

How do I fix CVE-2021-45757?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-45757?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST