CVE-2021-42911

Public Exploit

Description

A Format String vulnerability exists in DrayTek Vigor 2960 <= 1.5.1.3, DrayTek Vigor 3900 <= 1.5.1.3, and DrayTek Vigor 300B <= 1.5.1.3 in the mainfunction.cgi file via a crafted HTTP message containing malformed QUERY STRING, which could let a remote malicious user execute arbitrary code.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 12.54% Top 10%
Third-Party Advisory github.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://gist.github.com/Cossack9989/e9c1c2d2e69b773ca4251acdd77f2835 third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2021-42911?
CVE-2021-42911 has been scored as a critical severity vulnerability.
How to fix CVE-2021-42911?
To fix CVE-2021-42911, 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-2021-42911 being actively exploited in the wild?
It is possible that CVE-2021-42911 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~13% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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