{"id":241374,"date":"2026-07-23T00:21:26","date_gmt":"2026-07-23T05:21:26","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2026\/07\/windows-legacyhive-zero-day-flaw-gets-free-unofficial-patches"},"modified":"2026-07-23T00:21:26","modified_gmt":"2026-07-23T05:21:26","slug":"windows-legacyhive-zero-day-flaw-gets-free-unofficial-patches","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2026\/07\/windows-legacyhive-zero-day-flaw-gets-free-unofficial-patches","title":{"rendered":"Windows LegacyHive zero-day flaw gets free, unofficial patches"},"content":{"rendered":"<p><\/p>\n<p><iframe style=\"display: block; margin: 0 auto; width: 100%; aspect-ratio: 4\/3; object-fit: contain;\" src=\"https:\/\/www.youtube.com\/embed\/FFBGj3in5D0?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope;\n   picture-in-picture\" allowfullscreen><\/iframe><\/p>\n<p>Free unofficial patches are available for a recently disclosed Windows zero-day flaw that allows attackers to escalate privileges on up-to-date Windows systems.<\/p>\n<p>The vulnerability (dubbed <a href=\"https:\/\/www.bleepingcomputer.com\/news\/security\/new-windows-legacyhive-zero-day-exploit-grants-hackers-admin-access\/\" target=\"_blank\" rel=\"nofollow noopener\">LegacyHive<\/a> and without a CVE ID for easy tracking) was found by a security researcher using the \u201cNightmare Eclipse\u201d handle in the Windows User Profile Service.<\/p>\n<p>Nightmare Eclipse disclosed it the day Microsoft released its July 2026 Patch Tuesday updates, together with a stripped proof-of-concept exploit designed to make it harder for threat actors to weaponize this security issue in attacks.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Free unofficial patches are available for a recently disclosed Windows zero-day flaw that allows attackers to escalate privileges on up-to-date Windows systems. The vulnerability (dubbed LegacyHive and without a CVE ID for easy tracking) was found by a security researcher using the \u201cNightmare Eclipse\u201d handle in the Windows User Profile Service. Nightmare Eclipse disclosed it [\u2026]<\/p>\n","protected":false},"author":427,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1492],"tags":[],"class_list":["post-241374","post","type-post","status-publish","format-standard","hentry","category-security"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/241374","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/users\/427"}],"replies":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/comments?post=241374"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/241374\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=241374"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=241374"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=241374"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}