{"id":"CVE-2026-49160","title":"HTTP.sys Denial of Service Vulnerability","summary":"Uncontrolled resource consumption in HTTP/2 allows an unauthorized attacker to deny service over a network.","severity":"high","cvss":7.5,"cvssVector":"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","cvssSource":"cna","cwe":["CWE-400"],"vendor":"Microsoft","product":"Windows 10 Version 1607","affected":["windows_10_version_1607 >= 10.0.14393.0 < 10.0.14393.9234","windows_10_version_1809 >= 10.0.17763.0 < 10.0.17763.8880","windows_10_version_21h2 >= 10.0.19044.0 < 10.0.19044.7417","windows_10_version_22h2 >= 10.0.19045.0 < 10.0.19045.7417","windows_11_version_23h2 >= 10.0.22631.0 < 10.0.22631.7219","windows_11_version_23h2 >= 10.0.22631.0 < 10.0.22631.7219","windows_11_version_24h2 >= 10.0.26100.0 < 10.0.26100.8655","windows_11_version_25h2 >= 10.0.26200.0 < 10.0.26200.8655","windows_11_version_26h1 >= 10.0.28000.0 < 10.0.28000.2269","windows_server_2016 >= 10.0.14393.0 < 10.0.14393.9234","windows_server_2016_server_core_installation >= 10.0.14393.0 < 10.0.14393.9234","windows_server_2019 >= 10.0.17763.0 < 10.0.17763.8880","windows_server_2019_server_core_installation >= 10.0.17763.0 < 10.0.17763.8880","windows_server_2022 >= 10.0.20348.0 < 10.0.20348.5256","windows_server_2025 >= 10.0.26100.0 < 10.0.26100.32995","windows_server_2025_server_core_installation >= 10.0.26100.0 < 10.0.26100.32995"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-06-10T14:13:38.881981Z"},"exploitAvailable":true,"published":"2026-06-09","updated":"2026-09-24","sourceUpdated":"2026-09-24T13:44:48.611Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-49160","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-49160","label":"HTTP.sys Denial of Service Vulnerability"}],"tags":["cve.org","exploit-available"],"epss":0.01174,"epssPercentile":0.66144,"exploits":{"github":1,"githubRepos":["https://github.com/dhmosfunk/CVE-2026-49160-CVE-2026-47291-HTTP.sys"],"checkedAt":"2026-09-25T08:20:59.961Z"},"ingestedAt":"2026-09-24T14:44:21.382Z","slug":"CVE-2026-49160","body":"## Overview\n\nUncontrolled resource consumption in HTTP/2 allows an unauthorized attacker to deny service over a network.\n\n## Affected\n\n- `windows_10_version_1607 >= 10.0.14393.0 < 10.0.14393.9234`\n- `windows_10_version_1809 >= 10.0.17763.0 < 10.0.17763.8880`\n- `windows_10_version_21h2 >= 10.0.19044.0 < 10.0.19044.7417`\n- `windows_10_version_22h2 >= 10.0.19045.0 < 10.0.19045.7417`\n- `windows_11_version_23h2 >= 10.0.22631.0 < 10.0.22631.7219`\n- `windows_11_version_23h2 >= 10.0.22631.0 < 10.0.22631.7219`\n- `windows_11_version_24h2 >= 10.0.26100.0 < 10.0.26100.8655`\n- `windows_11_version_25h2 >= 10.0.26200.0 < 10.0.26200.8655`\n- `windows_11_version_26h1 >= 10.0.28000.0 < 10.0.28000.2269`\n- `windows_server_2016 >= 10.0.14393.0 < 10.0.14393.9234`\n- `windows_server_2016_server_core_installation >= 10.0.14393.0 < 10.0.14393.9234`\n- `windows_server_2019 >= 10.0.17763.0 < 10.0.17763.8880`\n- `windows_server_2019_server_core_installation >= 10.0.17763.0 < 10.0.17763.8880`\n- `windows_server_2022 >= 10.0.20348.0 < 10.0.20348.5256`\n- `windows_server_2025 >= 10.0.26100.0 < 10.0.26100.32995`\n- `windows_server_2025_server_core_installation >= 10.0.26100.0 < 10.0.26100.32995`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":53,"depthScoreParts":{"impact":41.3,"likelihood":0.2,"exploitation":12,"ransomware":0},"changes":[{"seq":210770,"id":"CVE-2026-49160","ts":1790325691535,"field":"epss","old":"0.53829","new":"0.01174"}]}