{"id":241247,"date":"2026-07-21T05:17:58","date_gmt":"2026-07-21T10:17:58","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2026\/07\/new-windows-legacyhive-zero-day-gives-hackers-admin-privileges"},"modified":"2026-07-21T05:17:58","modified_gmt":"2026-07-21T10:17:58","slug":"new-windows-legacyhive-zero-day-gives-hackers-admin-privileges","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2026\/07\/new-windows-legacyhive-zero-day-gives-hackers-admin-privileges","title":{"rendered":"New Windows LegacyHive zero-day gives hackers admin privileges"},"content":{"rendered":"<p><a class=\"aligncenter blog-photo\" href=\"https:\/\/lifeboat.com\/blog.images\/new-windows-legacyhive-zero-day-gives-hackers-admin-privileges.jpg\"><\/a><\/p>\n<p>A security researcher using the \u201cNightmare Eclipse\u201d handle has released a Windows zero-day exploit dubbed LegacyHive that allows attackers to escalate privileges on up-to-date Windows systems.<\/p>\n<p>Nightmare Eclipse published a proof-of-concept (PoC) exploit hours after Microsoft released its July 2026 Patch Tuesday updates, saying that it abuses a security vulnerability in the Windows User Profile Service, which has yet to receive a CVE ID for easier tracking.<\/p>\n<p>However, unlike previous exploits released by NightmwareEclipse, the LegacyHive PoC has been modified to require additional credentials, making it harder for attackers to weaponize the vulnerability.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A security researcher using the \u201cNightmare Eclipse\u201d handle has released a Windows zero-day exploit dubbed LegacyHive that allows attackers to escalate privileges on up-to-date Windows systems. Nightmare Eclipse published a proof-of-concept (PoC) exploit hours after Microsoft released its July 2026 Patch Tuesday updates, saying that it abuses a security vulnerability in the Windows User Profile [\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-241247","post","type-post","status-publish","format-standard","hentry","category-security"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/241247","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=241247"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/241247\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=241247"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=241247"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=241247"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}