CVE-2021-27797

Name: CVE-2021-27797
Creator: NVD / NIST
Published: 2022-02-21T18:15:08.447+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.33%

Last modified Jun 17, 2026

CVE-2021-27797 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Brocade Fabric OS before Brocade Fabric OS v8.2.1c, v8.1.2h, and all versions of Brocade Fabric OS v8.0.x and v7.x contain documented hard-coded credentials, which could allow attackers to gain access to the system.. EPSS estimates a 1.33% chance of exploitation in the next 30 days.

Description

Brocade Fabric OS before Brocade Fabric OS v8.2.1c, v8.1.2h, and all versions of Brocade Fabric OS v8.0.x and v7.x contain documented hard-coded credentials, which could allow attackers to gain access to the system.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

1.33%

67.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-798

Affected Software

Vendor	Product	Versions
Broadcom	Fabric Operating System	>= 7.0.0, <= 7.4.2h
Broadcom	Fabric Operating System	>= 8.0.0, <= 8.0.2f
Broadcom	Fabric Operating System	>= 8.1.2, < 8.1.2h
Broadcom	Fabric Operating System	>= 8.2.1, < 8.2.1c

References

Timeline

Published: Feb 21, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-27797?

How severe is CVE-2021-27797?

CVE-2021-27797 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.33% probability of exploitation in the next 30 days.

How do I fix CVE-2021-27797?

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-2021-27797?

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

Scan your code now

Source: NVD / NIST