{"id":"CVE-2026-72989","aliases":["EUVD-2026-73742","GHSA-gvv7-244c-qc99"],"status":"published","title":"Windows Failover Cluster Information Disclosure Vulnerability","description":"Use of uninitialized resource in Windows Failover Cluster allows an unauthorized attacker to disclose information over a network.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.01027,"percentile":0.6404,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-908"],"published":"2026-09-08T17:17:48Z","modified":"2026-11-10T21:36:51Z","products":[{"vendor":"microsoft","product":"windows 10 version 1809"},{"vendor":"microsoft","product":"windows server 2019"},{"vendor":"microsoft","product":"windows server 2019 (server core installation)"},{"vendor":"microsoft","product":"windows server 2022"},{"vendor":"microsoft","product":"windows server 2025"},{"vendor":"microsoft","product":"windows server 2025 (server core installation)"},{"vendor":"microsoft","product":"windows_10_1809"},{"vendor":"microsoft","product":"windows_server_2019"},{"vendor":"microsoft","product":"windows_server_2022"},{"vendor":"microsoft","product":"windows_server_2025"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-72989","tags":["vendor-advisory","patch","Vendor Advisory","Patch"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72989"},{"url":"https://github.com/advisories/GHSA-gvv7-244c-qc99"}],"sources":{"cve":[{"id":"CVE-2026-72989","title":"Windows Failover Cluster Information Disclosure Vulnerability","description":"Use of uninitialized resource in Windows Failover Cluster allows an unauthorized attacker to disclose information over a network.","status":"published","published":"2026-09-08T17:17:48.287Z","modified":"2026-11-10T21:36:51.849Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","level":"high","assessor":"cna"}],"cwes":["CWE-908"],"updated_at":"2026-11-10T22:48:53.557052Z"}],"euvd":[{"id":"EUVD-2026-73742","description":"Use of uninitialized resource in Windows Failover Cluster allows an unauthorized attacker to disclose information over a network.","status":"published","published":"2026-09-08T17:17:48Z","modified":"2026-11-10T21:36:51Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-10T23:24:19.817203Z"}],"ghsa":[{"id":"GHSA-gvv7-244c-qc99","title":"Use of uninitialized resource in Windows Failover Cluster allows an unauthorized attacker to...","description":"Use of uninitialized resource in Windows Failover Cluster allows an unauthorized attacker to disclose information over a network.","status":"published","published":"2026-09-08T18:33:14Z","modified":"2026-09-08T18:33:50Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"cwes":["CWE-908"],"updated_at":"2026-11-02T15:11:34.019342Z"}],"nvd":[{"id":"CVE-2026-72989","description":"Use of uninitialized resource in Windows Failover Cluster allows an unauthorized attacker to disclose information over a network.","status":"published","published":"2026-09-08T18:20:26.373Z","modified":"2026-09-21T15:33:38.63Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"secondary"}],"cwes":["CWE-908"],"updated_at":"2026-11-02T14:12:45.264578Z"}]}}