{"cve":"CVE-2021-27795","nvd":{"published":"2023-12-06T02:15:06.573","modified":"2026-06-17T03:45:28.140","status":"Modified","description":"Brocade Fabric OS (FOS) hardware \nplatforms running any version of Brocade Fabric OS software, which \nsupports the license string format; contain cryptographic \nissues that could allow for the installation of forged or fraudulent \nlicense keys. This would allow attackers or a malicious party to forge a\n counterfeit license key that the Brocade Fabric OS platform would \nauthenticate and activate as if it were a legitimate license key.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","score":8.1},"cwes":["CWE-327"],"references":["https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/21289","https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/21289"],"products":["broadcom:fabric_operating_system"],"source":"nvd","synced_at":"2026-10-19T21:42:34.585441961+00:00"},"epss":{"cve":"CVE-2021-27795","score":0.00244,"percentile":0.1561,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}