CVE-2021-27793 json
ntermittent authorization failure in aaa tacacs+ with Brocade Fabric OS versions before Brocade Fabric OS v9.0.1b and after 9.0.0, also in…
published 5y ago modified 4mo ago also EUVD-2021-14534
- cvss
- 5.3
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.9%
- EPSS 0.9% chance of exploitation in 30 days, percentile 60%
- public exploits
- 0
- none known
Summary
ntermittent authorization failure in aaa tacacs+ with Brocade Fabric OS versions before Brocade Fabric OS v9.0.1b and after 9.0.0, also in Brocade Fabric OS before Brocade Fabric OS v8.2.3a and after v8.2.0 could cause a user with a valid account to be unable to log into the switch.
Patch / fix
- broadcom fabric_operating_system 8.2.3, 9.0.1
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Check with FencerExploit prediction
0.91% chance of exploitation in the next 30 days, higher than 60% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
Affected products
- n/a Brocade Fabric OS
Classification
- Weakness
-
- CWE-863 Incorrect Authorization
References
-
broadcom.com
/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2021-1553
vendor-advisory
-
security.netapp.com
/advisory/ntap-20210819-0001/
third-party-advisory
Sources
- CVE List CVE-2021-27793
- NVD CVE-2021-27793
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