{"id":"CVE-2026-49160","aliases":["EUVD-2026-35588","GHSA-g6wq-v77v-v58c"],"status":"published","title":"HTTP.sys Denial of Service Vulnerability","description":"Uncontrolled resource consumption in HTTP/2 allows an unauthorized attacker to deny service 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:N/I:N/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.56595,"percentile":0.99067,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-400","CWE-405"],"published":"2026-06-09T17:05:54Z","modified":"2026-11-10T23:24:44Z","exploits":[{"source":"pocgithub","id":"dhmosfunk/CVE-2026-49160-CVE-2026-47291-HTTP.sys","title":"dhmosfunk/CVE-2026-49160-CVE-2026-47291-HTTP.sys","date":"2026-06-15","url":"https://github.com/dhmosfunk/CVE-2026-49160-CVE-2026-47291-HTTP.sys"}],"products":[{"vendor":"microsoft","product":"windows 10 version 1607"},{"vendor":"microsoft","product":"windows 10 version 1809"},{"vendor":"microsoft","product":"windows 10 version 21h2"},{"vendor":"microsoft","product":"windows 10 version 22h2"},{"vendor":"microsoft","product":"windows 11 version 23h2"},{"vendor":"microsoft","product":"windows 11 version 24h2"},{"vendor":"microsoft","product":"windows 11 version 25h2"},{"vendor":"microsoft","product":"windows 11 version 26h1"},{"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_10_21h2"},{"vendor":"microsoft","product":"windows_10_22h2"},{"vendor":"microsoft","product":"windows_11_23h2"},{"vendor":"microsoft","product":"windows_11_24h2"},{"vendor":"microsoft","product":"windows_11_25h2"},{"vendor":"microsoft","product":"windows_11_26h1"},{"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-2026-49160","tags":["vendor-advisory","patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-49160"},{"url":"https://github.com/advisories/GHSA-g6wq-v77v-v58c"}],"sources":{"cve":[{"id":"CVE-2026-49160","title":"HTTP.sys Denial of Service Vulnerability","description":"Uncontrolled resource consumption in HTTP/2 allows an unauthorized attacker to deny service over a network.","status":"published","published":"2026-06-09T17:05:54.826Z","modified":"2026-11-10T23:24:44.867Z","cvss":[{"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/E:U/RL:O/RC:C","level":"high","assessor":"cna"}],"cwes":["CWE-405"],"updated_at":"2026-11-11T00:50:10.599584Z"}],"euvd":[{"id":"EUVD-2026-35588","description":"Uncontrolled resource consumption in HTTP/2 allows an unauthorized attacker to deny service over a network.","status":"published","published":"2026-06-09T17:05:54Z","modified":"2026-11-10T23:24:44Z","cvss":[{"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/E:U/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-11T00:24:45.332412Z"}],"ghsa":[{"id":"GHSA-g6wq-v77v-v58c","title":"Uncontrolled resource consumption in HTTP/2 allows an unauthorized attacker to deny service over...","description":"Uncontrolled resource consumption in HTTP/2 allows an unauthorized attacker to deny service over a network.","status":"published","published":"2026-06-09T18:31:01Z","modified":"2026-11-11T00:32:58Z","cvss":[{"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"}],"cwes":["CWE-400","CWE-405"],"updated_at":"2026-11-11T01:00:12.54012Z"}],"nvd":[{"id":"CVE-2026-49160","description":"Uncontrolled resource consumption in HTTP/2 allows an unauthorized attacker to deny service over a network.","status":"published","published":"2026-06-09T17:17:46.963Z","modified":"2026-11-11T00:19:09.81Z","cvss":[{"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":"secondary"}],"cwes":["CWE-405"],"updated_at":"2026-11-11T02:22:15.81771Z"}]}}