{"id":"CVE-2021-27795","aliases":["EUVD-2021-14536","GHSA-phm5-rgh2-qxcf"],"status":"published","title":"License forgery in Brocade Fabric OS (FOS) hardware platforms running any version of Brocade Fabric OS software,","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.","severity":{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00244,"percentile":0.1566,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-327"],"published":"2023-12-06T01:16:07Z","modified":"2026-06-17T03:45:28Z","products":[{"vendor":"broadcom","product":"fabric_operating_system"},{"vendor":"brocade","product":"brocade switches"}],"references":[{"url":"https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/21289","tags":["x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-27795"},{"url":"https://github.com/advisories/GHSA-phm5-rgh2-qxcf"}],"sources":{"cve":[{"id":"CVE-2021-27795","title":"License forgery in Brocade Fabric OS (FOS) hardware platforms running any version of Brocade Fabric OS software, ","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","status":"published","published":"2023-12-06T01:16:07.122Z","modified":"2024-08-03T21:33:15.653Z","cvss":[{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-327"],"updated_at":"2026-11-02T14:33:04.360272Z"}],"euvd":[{"id":"EUVD-2021-14536","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","status":"published","published":"2023-12-06T01:16:07Z","modified":"2024-08-03T21:33:15Z","cvss":[{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:H","level":"medium"}],"updated_at":"2026-11-03T03:24:48.366655Z"}],"ghsa":[{"id":"GHSA-phm5-rgh2-qxcf","title":"Brocade Fabric OS (FOS) hardware \nplatforms running any version of Brocade Fabric OS software,...","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","status":"published","published":"2023-12-06T03:30:27Z","modified":"2023-12-06T03:30:38Z","cvss":[{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:H","level":"medium"}],"cwes":["CWE-327"],"updated_at":"2026-11-02T14:55:09.149913Z"}],"nvd":[{"id":"CVE-2021-27795","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","status":"published","published":"2023-12-06T02:15:06.573Z","modified":"2026-06-17T03:45:28.14Z","cvss":[{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:H","level":"medium","assessor":"secondary"},{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-327"],"updated_at":"2026-11-02T14:07:07.764332Z"}]}}