CVE-2021-27201

Name: CVE-2021-27201
Creator: NVD / NIST
Published: 2021-02-15T19:15:13.127+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 2.61%

Last modified Jun 17, 2026

CVE-2021-27201 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Endian Firewall Community (aka EFW) 3.3.2 allows remote authenticated users to execute arbitrary OS commands via shell metacharacters in a backup comment.. EPSS estimates a 2.61% chance of exploitation in the next 30 days.

Description

Endian Firewall Community (aka EFW) 3.3.2 allows remote authenticated users to execute arbitrary OS commands via shell metacharacters in a backup comment.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

2.61%

83.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-78

Affected Software

Vendor	Product	Versions
Endian	Firewall Community	3.3.2

References

https://github.com/MucahitSaratar/endian_firewall_authenticated_rceExploit, Third Party Advisory
https://sourceforge.net/projects/efw/files/Development/EFW-3.3.2/Release Notes, Third Party Advisory
https://www.endian.com/company/news/endian-community-releases-new-version-332-148/Release Notes, Vendor Advisory
https://github.com/MucahitSaratar/endian_firewall_authenticated_rceExploit, Third Party Advisory
https://sourceforge.net/projects/efw/files/Development/EFW-3.3.2/Release Notes, Third Party Advisory
https://www.endian.com/company/news/endian-community-releases-new-version-332-148/Release Notes, Vendor Advisory

Timeline

Published: Feb 15, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-27201?

Endian Firewall Community (aka EFW) 3.3.2 allows remote authenticated users to execute arbitrary OS commands via shell metacharacters in a backup comment.

How severe is CVE-2021-27201?

CVE-2021-27201 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 2.61% probability of exploitation in the next 30 days.

How do I fix CVE-2021-27201?

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-2021-27201?

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

Scan your code now

Source: NVD / NIST