CVE-2021-3166

Public Exploit

Description

An issue was discovered on ASUS DSL-N14U-B1 1.1.2.3_805 devices. An attacker can upload arbitrary file content as a firmware update when the filename Settings_DSL-N14U-B1.trx is used. Once this file is loaded, shutdown measures on a wide range of services are triggered as if it were a real update, resulting in a persistent outage of those services.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 4.71% Top 15%
Third-Party Advisory github.com Third-Party Advisory github.io
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://kaisersource.github.io/dsl-n14u third party advisory exploit
https://github.com/kaisersource/kaisersource.github.io/blob/main/_posts/2021-01-17-dsl-n14u.md third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2021-3166?
CVE-2021-3166 has been scored as a high severity vulnerability.
How to fix CVE-2021-3166?
To fix CVE-2021-3166, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-3166 being actively exploited in the wild?
It is possible that CVE-2021-3166 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~5% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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