CVE-2021-20042

Description

An unauthenticated remote attacker can use SMA 100 as an unintended proxy or intermediary undetectable proxy to bypass firewall rules. This vulnerability affected SMA 200, 210, 400, 410 and 500v appliances.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.81% Top 30%
Vendor Advisory sonicwall.com
Affected: SonicWall SonicWall SMA100
Published at:
Updated at:

References

Link Tags
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0026 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-20042?
CVE-2021-20042 has been scored as a critical severity vulnerability.
How to fix CVE-2021-20042?
To fix CVE-2021-20042, 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-2021-20042 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-20042 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-20042?
CVE-2021-20042 affects SonicWall SonicWall SMA100.
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