Medium severity · published Mar 18, 2022
CVE-2021-27789
The Web application of Brocade Fabric OS before versions Brocade Fabric OS v9.0.1a and v8.2.3a contains debug statements that expose sensitive information to the program's…
6.5
CVSS
0.8%
EPSS
No
On KEV
Description
The Web application of Brocade Fabric OS before versions Brocade Fabric OS v9.0.1a and v8.2.3a contains debug statements that expose sensitive information to the program's standard output device. An attacker who has compromised the FOS system may utilize this weakness to capture sensitive information, such as user credentials.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 57% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FO
Fabric Operating System · Broadcom
before 8.2.3a; 9.0.0 before 9.0.1a · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-27789
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-27789
Not Applicable
https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2021-1494
More from Fabric Operating System
7.8
CVE-2021-22555
Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE
6.7
CVE-2025-1976
Code injection exposure in Fabric OS 9.1.0 through 9.1.1d6
9.8
CVE-2026-87659
A critical authorization bypass vulnerability exists in the Management Server handling of Brocade Fabric OS versions before 10.0.1
9.8
CVE-2026-87684
A stack-based buffer overflow vulnerability exists in the SNMP daemon request handling of Brocade Fabric versions before 10.0.1
9.8
CVE-2023-3454
Remote code execution (RCE) vulnerability in Brocade Fabric OS after v9.0 and before v9.2.0 could allow an attacker to execute arbitrary code and use this to gain root access to…