{"id":"CVE-2026-68819","aliases":["EUVD-2026-56467","GHSA-x7cr-3chg-3844"],"status":"published","title":"Windows Network File System Denial of Service Vulnerability","description":"Buffer over-read in Windows Network File System allows an unauthorized attacker to deny service over a network.","severity":{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00983,"percentile":0.62606,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-126"],"published":"2026-08-11T17:05:15Z","modified":"2026-10-30T17:21:01Z","products":[{"vendor":"microsoft","product":"windows 10 version 1607"},{"vendor":"microsoft","product":"windows 10 version 1809"},{"vendor":"microsoft","product":"windows server 2012"},{"vendor":"microsoft","product":"windows server 2012 (server core installation)"},{"vendor":"microsoft","product":"windows server 2012 r2"},{"vendor":"microsoft","product":"windows server 2012 r2 (server core installation)"},{"vendor":"microsoft","product":"windows server 2016"},{"vendor":"microsoft","product":"windows server 2016 (server core installation)"},{"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_1607"},{"vendor":"microsoft","product":"windows_10_1809"},{"vendor":"microsoft","product":"windows_server_2012"},{"vendor":"microsoft","product":"windows_server_2016"},{"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-2026-68819","tags":["vendor-advisory","patch","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-68819"},{"url":"https://github.com/advisories/GHSA-x7cr-3chg-3844"}],"sources":{"cve":[{"id":"CVE-2026-68819","title":"Windows Network File System Denial of Service Vulnerability","description":"Buffer over-read in Windows Network File System allows an unauthorized attacker to deny service over a network.","status":"published","published":"2026-08-11T17:05:15.398Z","modified":"2026-10-30T17:21:01.101Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C","level":"medium","assessor":"cna"}],"cwes":["CWE-126"],"updated_at":"2026-11-02T13:46:10.323375Z"}],"euvd":[{"id":"EUVD-2026-56467","description":"Buffer over-read in Windows Network File System allows an unauthorized attacker to deny service over a network.","status":"published","published":"2026-08-11T17:05:15Z","modified":"2026-10-30T17:21:01Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C","level":"medium"}],"updated_at":"2026-11-02T16:59:04.296921Z"}],"ghsa":[{"id":"GHSA-x7cr-3chg-3844","title":"Buffer over-read in Windows Network File System allows an unauthorized attacker to deny service...","description":"Buffer over-read in Windows Network File System allows an unauthorized attacker to deny service over a network.","status":"published","published":"2026-08-11T18:31:45Z","modified":"2026-08-11T18:31:45Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-126"],"updated_at":"2026-11-02T15:10:20.045782Z"}],"nvd":[{"id":"CVE-2026-68819","description":"Buffer over-read in Windows Network File System allows an unauthorized attacker to deny service over a network.","status":"published","published":"2026-08-11T17:19:06.207Z","modified":"2026-08-16T19:17:24.027Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-126"],"updated_at":"2026-11-02T14:12:36.880938Z"}]}}