{"id":"CVE-2026-50420","title":"HTTP.sys Information Disclosure Vulnerability","summary":"Out-of-bounds read in Windows HTTP.sys allows an unauthorized attacker to disclose information locally.","severity":"medium","cvss":6.2,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","cvssSource":"cna","cwe":["CWE-125"],"vendor":"Microsoft","product":"Windows 11 Version 24H2","affected":["windows_11_version_24h2 >= 10.0.26100.0 < 10.0.26100.8875","windows_11_version_25h2 >= 10.0.26200.0 < 10.0.26200.8875","windows_11_version_26h1 >= 10.0.28000.0 < 10.0.28000.2525","windows_server_2025 >= 10.0.26100.0 < 10.0.26100.33158","windows_server_2025_server_core_installation >= 10.0.26100.0 < 10.0.26100.33158"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-07-16T13:54:29.557900Z"},"published":"2026-07-14","updated":"2026-09-25","sourceUpdated":"2026-09-25T18:22:52.164Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-50420","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50420","label":"HTTP.sys Information Disclosure Vulnerability"}],"tags":["cve.org"],"epss":0.00408,"epssPercentile":0.32348,"ingestedAt":"2026-09-08T17:06:31.916Z","slug":"CVE-2026-50420","body":"## Overview\n\nOut-of-bounds read in Windows HTTP.sys allows an unauthorized attacker to disclose information locally.\n\n## Affected\n\n- `windows_11_version_24h2 >= 10.0.26100.0 < 10.0.26100.8875`\n- `windows_11_version_25h2 >= 10.0.26200.0 < 10.0.26200.8875`\n- `windows_11_version_26h1 >= 10.0.28000.0 < 10.0.28000.2525`\n- `windows_server_2025 >= 10.0.26100.0 < 10.0.26100.33158`\n- `windows_server_2025_server_core_installation >= 10.0.26100.0 < 10.0.26100.33158`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":34,"depthScoreParts":{"impact":34.1,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}