CVE-2021-27795

License forgery in Brocade Fabric OS (FOS) hardware platforms running any version of Brocade Fabric OS software,

HIGH

8.1

CVSS Score

Published: December 6, 2023 at 01:16 AM UTC

Updated: June 17, 2026 at 03:45 AM UTC

13 products affected across 1 vendorFabric Operating SystemBrocade 6520Brocade 6510

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Severity

HIGH8.1

Exploit prediction

EPSS 0.2%

Description

Brocade Fabric OS (FOS) hardware platforms running any version of Brocade Fabric OS software, which supports the license string format; contain cryptographic issues that could allow for the installation of forged or fraudulent license keys. This would allow attackers or a malicious party to forge a counterfeit license key that the Brocade Fabric OS platform would authenticate and activate as if it were a legitimate license key.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Fabric Operating System · Broadcom

95%

All Version

broadcom-brocade-300 (environment) · broadcom-brocade-610 (environment) · broadcom-brocade-6505 (environment) · broadcom-brocade-6510 (environment) · broadcom-brocade-6520 (environment) · broadcom-brocade-7800 (environment) · broadcom-brocade-7810 (environment) · broadcom-brocade-7840 (environment) · broadcom-brocade-g620 (environment) · broadcom-brocade-g630 (environment) · broadcom-brocade-x6-4-director (environment) · broadcom-brocade-x6-8-director (environment)

Brocade 300 · Broadcomdevice

80%

All versions

Brocade 610 · Broadcomdevice

80%

All versions

Brocade 6505 · Broadcomdevice

80%

All versions

Brocade 6510 · Broadcomdevice

80%

All versions