Auth bypass in Broadcom Fabric Operating System
CVE-2021-27794
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.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.002 (13.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 14th percentile — 13.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Broadcom Fabric Operating System
- Brocade Fabric OS — versions before Brocade Fabric OS v.9.0.1a, v8.2.3a and v7.4.2h
Weakness classification (CWE)
References
- www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-s… (Vendor Advisory)
- security.netapp.com/advisory/ntap-20210819-0001/ (Third Party Advisory)
Frequently asked questions
- What is CVE-2021-27794?
- CVE-2021-27794 is a high-severity vulnerability in Broadcom Fabric Operating System, classified under Improper Authentication. CVSS score: 7.8/10. Published 2021-08-12.
- How severe is CVE-2021-27794?
- High severity. CVSS v3 base score is 7.8 out of 10.