CVE-2021-27794
HIGH
7.8
CVSS Score
Published: August 12, 2021 at 02:25 PM UTC
Updated: June 17, 2026 at 03:45 AM UTC
1 product affected across 1 vendorFabric Operating System
Using Brocade Fabric OS by N/A?
Get instant alerts when new vulnerabilities affect Brocade Fabric OS - before attackers find them.
Real-time alertsTrack your software stackFree plan available
Severity
HIGH7.8
Exploit prediction
EPSS 0.2%
Description
A vulnerability in the authentication mechanism of Brocade Fabric OS versions before Brocade Fabric OS v.9.0.1a, v8.2.3a and v7.4.2h could allow a user to Login with empty password, and invalid password through telnet, ssh and REST.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v < 7.4.2h8.0.0 ≤ v < 8.2.3a9.0.0 ≤ v < 9.0.1abefore Brocade Fabric OS v.9.0.1a, v8.2.3a and v7.4.2h
Affected range stops below 7.4.2h, so it looks safe — our inference, not a vendor statement
Affected range stops below 8.2.3a, so it looks safe — our inference, not a vendor statement
Affected range stops below 9.0.1a, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (2)
x_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://security.netapp.com/advisory/ntap-20210819-0001/x_refsource_MISCVendor Advisory
Source: [email protected]
https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2021-1552CVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-287
Get alerted
Stop reading CVE feeds looking for your own stack
Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.
Free plan, no card