{"id":5202,"date":"2026-08-12T05:34:53","date_gmt":"2026-08-12T05:34:53","guid":{"rendered":"https:\/\/windowsreport.com\/de\/microsoft-behebt-rund-400-sicherheitslucken-im-august-2026-patch-tuesday\/"},"modified":"2026-08-12T05:34:53","modified_gmt":"2026-08-12T05:34:53","slug":"microsoft-behebt-rund-400-sicherheitslucken-im-august-2026-patch-tuesday","status":"publish","type":"post","link":"https:\/\/windowsreport.com\/de\/microsoft-behebt-rund-400-sicherheitslucken-im-august-2026-patch-tuesday\/","title":{"rendered":"Microsoft behebt rund 400 Sicherheitsl\u00fccken im August-2026-Patch-Tuesday"},"content":{"rendered":"\n<p>Der August-2026-Patch-Tuesday von Microsoft behebt rund 400 Sicherheitsanf\u00e4lligkeiten, darunter 42 als Kritisch eingestufte Schwachstellen und drei Zero-Days, die Windows betreffen.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-microsoft-fixes-around-400-vulnerabilities\">Microsoft behebt rund 400 Sicherheitsanf\u00e4lligkeiten<\/h2>\n\n\n\n<p>Von den rund 400 in diesem Monat behobenen Sicherheitsanf\u00e4lligkeiten tragen 42 die Bewertung \u201eKritisch\u201c.<\/p>\n\n\n\n<p>Microsoft hat 37 dieser kritischen Schwachstellen als Remotecodeausf\u00fchrungs-Sicherheitsanf\u00e4lligkeiten eingestuft, w\u00e4hrend es sich bei f\u00fcnf um Rechteerweiterungen handelt.<\/p>\n\n\n\n<p>Das Unternehmen hat au\u00dferdem drei Zero-Day-Schwachstellen gepatcht. Eine davon wurde bereits aktiv in freier Wildbahn ausgenutzt.<\/p>\n\n\n\n<p>Microsoft hatte zuvor gewarnt, dass der zunehmende Einsatz KI-gest\u00fctzter Sicherheitstools dazu f\u00fchren k\u00f6nnte, dass mehr Windows-Sicherheitsl\u00fccken entdeckt und geschlossen werden.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-august-patch-tuesday-vulnerability-breakdown\">Aufschl\u00fcsselung der Sicherheitsanf\u00e4lligkeiten vom August-Patch-Tuesday<\/h3>\n\n\n\n<p>Microsoft hat Schwachstellen in mehreren Kategorien behoben:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>176 Rechteerweiterungs-Schwachstellen<\/li>\n\n\n\n<li>110 Remotecodeausf\u00fchrungs-Schwachstellen<\/li>\n\n\n\n<li>86 Informationsoffenlegungs-Schwachstellen<\/li>\n\n\n\n<li>21 Spoofing-Schwachstellen<\/li>\n\n\n\n<li>12 Denial-of-Service-Schwachstellen<\/li>\n\n\n\n<li>11 Schwachstellen zur Umgehung von Sicherheitsfunktionen<\/li>\n<\/ul>\n\n\n\n<p>Diese Zahlen beziehen sich auf Sicherheitsanf\u00e4lligkeiten, die Microsoft im Rahmen des August-2026-Patch-Tuesday behoben hat. Einige Sicherheitsl\u00fccken, die fr\u00fcher im Monat in anderen Microsoft-Produkten geschlossen wurden, sind nicht enthalten.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-actively-exploited-windows-zero-day-patched\">Aktiv ausgenutzter Windows-Zero-Day gepatcht<\/h3>\n\n\n\n<p>Einer der wichtigsten Fixes behebt CVE-2026-68820, eine Sicherheitsanf\u00e4lligkeit im Windows Ancillary Function Driver for WinSock.<\/p>\n\n\n\n<p>Die Use-after-free-Schwachstelle erlaubt einem lokal authentifizierten Angreifer, seine Rechte auf SYSTEM auszuweiten.<\/p>\n\n\n\n<p>Ein Angreifer muss eine speziell gestaltete Anwendung ausf\u00fchren, die eine Race-Condition ausl\u00f6st; der Angriff erfordert jedoch keine Benutzerinteraktion.<\/p>\n\n\n\n<p>Microsoft hat keine weiteren Details dazu ver\u00f6ffentlicht, wie Angreifer CVE-2026-68820 in realen Angriffen ausgenutzt haben.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-windows-user-profile-service-zero-day-fixed\">Zero-Day im Windows-Benutzerprofildienst behoben<\/h3>\n\n\n\n<p>Microsoft hat au\u00dferdem CVE-2026-62832 gepatcht, eine \u00f6ffentlich bekanntgegebene Sicherheitsanf\u00e4lligkeit zur Rechteerweiterung im Windows-Benutzerprofildienst.<\/p>\n\n\n\n<p>Die Schwachstelle scheint mit dem zuvor \u00f6ffentlich gemachten LegacyHive-Windows-Zero-Day \u00fcbereinzustimmen.<\/p>\n\n\n\n<p>Ein authentifizierter Angreifer, der \u00fcber Anmeldeinformationen f\u00fcr ein anderes lokales Konto verf\u00fcgt, k\u00f6nnte die Registrierungsstruktur dieses Benutzers laden.<\/p>\n\n\n\n<p>Eine erfolgreiche Ausnutzung k\u00f6nnte es dem Angreifer erm\u00f6glichen, auf die Daten eines anderen Benutzers zuzugreifen oder diese zu \u00e4ndern und m\u00f6glicherweise Administratorrechte zu erlangen.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-windows-container-isolation-flaw-also-patched\">Schwachstelle in der Windows-Containerisolation ebenfalls behoben<\/h3>\n\n\n\n<p>Der dritte Zero-Day, CVE-2026-72971, betrifft den Windows-Containerisolation FS-Filtertreiber (unionfs.sys).<\/p>\n\n\n\n<p>Microsoft beschreibt das Problem als eine \u00f6ffentlich bekanntgegebene Manipulationsschwachstelle, die durch eine fehlerhafte Linkaufl\u00f6sung verursacht wird.<\/p>\n\n\n\n<p>Die Schwachstelle kann von einem lokal authentifizierten Angreifer ausgenutzt werden.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-new-windows-11-and-windows-10-updates-are-available\">Neue Windows-11- und Windows-10-Updates sind verf\u00fcgbar<\/h3>\n\n\n\n<p>Neben den Sicherheitsfixes hat Microsoft neue kumulative Windows-Updates ver\u00f6ffentlicht.<\/p>\n\n\n\n<p>Windows-11-Nutzer erhielten <a href=\"https:\/\/windowsreport.com\/de\/windows-11-kb5121003-kb5121000-kb5120240-patchday-updates-fur-august-2026-veroffentlicht\/\" target=\"_blank\" rel=\"noopener noreferrer\">die kumulativen Updates KB5121003 und KB5120240 vom August 2026<\/a>.<\/p>\n\n\n\n<p>Windows-10-Nutzer mit Extended Security Updates erhielten das Update KB5120249 vom August 2026.<\/p>\n\n\n\n<p>\u00dcber <a href=\"https:\/\/www.bleepingcomputer.com\/news\/microsoft\/microsoft-august-2026-patch-tuesday-fixes-400-flaws-3-zero-days\/\" target=\"_blank\" rel=\"noopener noreferrer\">BleepingComputer<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Der August-2026-Patch-Tuesday von Microsoft behebt rund 400 Sicherheitsanf\u00e4lligkeiten, darunter 42 als Kritisch eingestufte Schwachstellen und drei Zero-Days, die Windows betreffen. Microsoft behebt rund 400 Sicherheitsanf\u00e4lligkeiten Von den rund 400 in diesem Monat behobenen Sicherheitsanf\u00e4lligkeiten tragen 42 die Bewertung \u201eKritisch\u201c. Microsoft hat 37 dieser kritischen Schwachstellen als Remotecodeausf\u00fchrungs-Sicherheitsanf\u00e4lligkeiten eingestuft, w\u00e4hrend es sich bei f\u00fcnf um Rechteerweiterungen [&hellip;]<\/p>\n","protected":false},"author":49,"featured_media":5203,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_enabled_clarity":"","footnotes":""},"categories":[1797],"tags":[],"work":[],"class_list":["post-5202","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-anleitung"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.2 (Yoast SEO v28.2) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Microsoft behebt rund 400 Sicherheitsl\u00fccken im August-2026-Patch-Tuesday<\/title>\n<meta name=\"description\" content=\"Microsofts Patch Tuesday im August 2026 behebt rund 400 Sicherheitsl\u00fccken, darunter 42 als kritisch 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