{"id":"CVE-2021-27795","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-27795","generatedAt":"2026-10-27T20:21:15.357Z","title":"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.","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. \n\n\n\n","published":"2023-12-06T02:15:07.000Z","lastModified":"2026-06-17T03:45:28.000Z","status":"Modified","sourceIdentifier":"sirt@brocade.com","cvss":{"version":"3.1","score":8.1,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-327"],"affected":["broadcom/fabric operating system"],"epss":{"score":0.00244,"percentile":0.15407,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.24%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/21289","tags":["Vendor Advisory"],"source":"sirt@brocade.com"},{"url":"https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/21289","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-27795","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}