{"id":"CVE-2026-87668","title":"A stack-based buffer overflow vulnerability exists in the diagnostic execution utility of Brocade Fabric OS versions before 10.0.1","summary":"A stack-based buffer overflow vulnerability exists in the diagnostic execution utility of Brocade Fabric OS versions before 10.0.1. When processing command arguments for diagnostic operations, the utility tokenizes user-supplied input in…","severity":"medium","cvss":6.9,"cvssVector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N","cwe":["CWE-121"],"vendor":"Brocade","product":"Fabric OS","affected":["fabric_os < 10.0.1"],"published":"2026-10-08","updated":"2026-10-08","sourceUpdated":"2026-10-08T03:16:36.100","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-87668","references":[{"url":"https://support.broadcom.com/external/content/SecurityAdvisories/0/39152","label":"sirt@brocade.com"}],"tags":["nvd","cve.org"],"cvssSource":"cna","ingestedAt":"2026-10-08T04:04:32.114Z","slug":"CVE-2026-87668","body":"## Overview\n\nA stack-based buffer overflow vulnerability exists in the diagnostic execution utility of Brocade Fabric OS versions before 10.0.1. When processing command arguments for diagnostic operations, the utility tokenizes user-supplied input into an internal argument array without enforcing boundary checks on the maximum array capacity. An authenticated user with administrative access can exploit this vulnerability by supplying a crafted diagnostic command string containing an excessive number of tokenized arguments. This leads to a memory overwrite resulting in a denial of service (process crash).\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":38,"depthScoreParts":{"impact":38,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}