{"id":30346,"date":"2026-03-01T00:32:20","date_gmt":"2026-02-28T21:32:20","guid":{"rendered":"https:\/\/www.dztecs.com\/tech\/?p=30346"},"modified":"2026-03-01T00:32:20","modified_gmt":"2026-02-28T21:32:20","slug":"protecting-office-from-the-cve-2026-21509-vulnerability-a-step-by-step-guide","status":"publish","type":"post","link":"https:\/\/www.dztecs.com\/tech\/protecting-office-from-the-cve-2026-21509-vulnerability-a-step-by-step-guide\/","title":{"rendered":"\u062d\u0645\u0627\u064a\u0629 Office \u0645\u0646 \u062b\u063a\u0631\u0629 CVE-2026-21509: \u062f\u0644\u064a\u0644 \u062e\u0637\u0648\u0629 \u0628\u062e\u0637\u0648\u0629"},"content":{"rendered":"<p>\u0641\u064a \u0627\u0644\u0622\u0648\u0646\u0629 \u0627\u0644\u0623\u062e\u064a\u0631\u0629\u060c \u0641\u064a 26 \u064a\u0646\u0627\u064a\u0631 2026\u060c \u0633\u0627\u0631\u0639\u062a \u0634\u0631\u0643\u0629 Microsoft \u0625\u0644\u0649 \u0625\u0635\u062f\u0627\u0631 \u062a\u062d\u062f\u064a\u062b \u0639\u0627\u062c\u0644 \u0630\u064a \u062e\u0637\u0648\u0631\u0629 \u0639\u0627\u0644\u064a\u0629 \u0644\u0645\u0639\u0627\u0644\u062c\u0629 <a href=\"https:\/\/www.dztecs.com\/tech\/urgent-security-updates-to-fix-a-zero-day-vulnerability-exploited-in-chrome-attacks\/\">\u062b\u063a\u0631\u0629 zero-day \u0641\u064a Microsoft<\/a> Office \u062a\u0633\u0645\u062d \u0644\u0644\u062c\u0647\u0627\u062a \u0627\u0644\u062e\u0628\u064a\u062b\u0629 \u0628\u062a\u062c\u0627\u0648\u0632 \u0627\u0644\u0645\u064a\u0632\u0627\u062a \u0627\u0644\u0623\u0645\u0646\u064a\u0629. \u0648\u064a\u0634\u0627\u0631 \u0625\u0644\u0649 \u0647\u0630\u0647 \u0627\u0644\u062b\u063a\u0631\u0629 \u0628\u0627\u0644\u0631\u0642\u0645 CVE-2026-21509. \u062a\u0638\u0644 \u0645\u0643\u0648\u0646\u0627\u062a Microsoft Office \u0647\u062f\u0641\u064b\u0627 \u062c\u0630\u0627\u0628\u064b\u0627 \u0644\u062b\u063a\u0631\u0627\u062a zero-day.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-30347\" src=\"https:\/\/www.dztecs.com\/tech\/wp-content\/uploads\/sites\/10\/2026\/02\/m-office-1024x576-2.png\" alt=\"Protect Office from Actively Exploited Zero-Day (CVE-2026-21509): Step-by-step Guide\u00a0 image 1\" width=\"1024\" height=\"576\" srcset=\"https:\/\/www.dztecs.com\/tech\/wp-content\/uploads\/sites\/10\/2026\/02\/m-office-1024x576-2.png 1024w, https:\/\/www.dztecs.com\/tech\/wp-content\/uploads\/sites\/10\/2026\/02\/m-office-1024x576-2-400x225.png 400w, https:\/\/www.dztecs.com\/tech\/wp-content\/uploads\/sites\/10\/2026\/02\/m-office-1024x576-2-768x432.png 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/>\u0646\u0638\u0631\u064b\u0627 \u0644\u0623\u0646 Microsoft Office \u064a\u0645\u062b\u0644 \u0627\u0644\u0639\u0645\u0648\u062f \u0627\u0644\u0641\u0642\u0631\u064a \u0644\u0644\u0645\u0624\u0633\u0633\u0627\u062a\u060c \u0628\u062f\u0621\u064b\u0627 \u0645\u0646 \u0627\u0644\u0628\u0631\u064a\u062f \u0627\u0644\u0625\u0644\u0643\u062a\u0631\u0648\u0646\u064a \u0648\u0648\u0635\u0648\u0644\u064b\u0627 \u0625\u0644\u0649 \u062c\u062f\u0627\u0648\u0644 \u0627\u0644\u0628\u064a\u0627\u0646\u0627\u062a \u0648\u0627\u0644\u0639\u0631\u0648\u0636 \u0627\u0644\u062a\u0642\u062f\u064a\u0645\u064a\u0629 \u0648\u0627\u0644\u0645\u0633\u062a\u0646\u062f\u0627\u062a\u060c \u0641\u0642\u062f \u0623\u062d\u062f\u062b \u0647\u0630\u0627 \u0627\u0644\u0627\u0643\u062a\u0634\u0627\u0641 \u0635\u062f\u0645\u0629 \u0641\u064a \u0645\u062c\u062a\u0645\u0639 \u0627\u0644\u0623\u0645\u0646 \u0627\u0644\u0633\u064a\u0628\u0631\u0627\u0646\u064a.<\/p>\n<p>\u0645\u0627 \u0647\u064a \u0627\u0644\u0623\u062e\u0628\u0627\u0631 \u0627\u0644\u062c\u064a\u062f\u0629\u061f \u0644\u0645 \u062a\u0639\u062f \u0645\u0636\u0637\u0631\u064b\u0627 \u0625\u0644\u0649 \u0627\u0646\u062a\u0638\u0627\u0631 \u0627\u0644\u062a\u0648\u0632\u064a\u0639 \u0627\u0644\u0643\u0627\u0645\u0644 \u0644\u0644\u062a\u0635\u062d\u064a\u062d\u061b \u0628\u062f\u0644\u064b\u0627 \u0645\u0646 \u0630\u0644\u0643\u060c \u0647\u0646\u0627\u0643 \u062e\u0637\u0648\u0627\u062a \u0639\u0645\u0644\u064a\u0629 \u064a\u0645\u0643\u0646\u0643 \u0627\u062a\u062e\u0627\u0630\u0647\u0627 \u0644\u062d\u0645\u0627\u064a\u0629 \u0646\u0638\u0627\u0645\u0643.<\/p>\n<p>\u0625\u0644\u064a\u0643 \u062a\u0641\u0635\u064a\u0644 \u0644\u062a\u0644\u0643 \u0627\u0644\u062e\u0637\u0648\u0627\u062a.<\/p>\n<h2><strong>\u0627\u0644\u062a\u0647\u062f\u064a\u062f<\/strong><\/h2>\n<p>\u064a\u0633\u0645\u062d \u0627\u0633\u062a\u063a\u0644\u0627\u0644 \u0627\u0644\u062b\u063a\u0631\u0629 CVE-2026-21509 \u0644\u0644\u0645\u0647\u0627\u062c\u0645\u064a\u0646 \u0628\u062a\u062c\u0627\u0648\u0632 \u0627\u0644\u0645\u064a\u0632\u0627\u062a \u0627\u0644\u0623\u0645\u0646\u064a\u0629 \u0627\u0644\u062a\u064a \u062a\u0639\u0632\u0644 \u0627\u0644\u062b\u063a\u0631\u0627\u062a \u0627\u0644\u0623\u0645\u0646\u064a\u0629 \u062f\u0627\u062e\u0644 \u0628\u064a\u0626\u0629 Office. \u0648\u0628\u0627\u0644\u062a\u0627\u0644\u064a\u060c \u064a\u0645\u062a\u062f \u0627\u0644\u062a\u0647\u062f\u064a\u062f \u0625\u0644\u0649:<\/p>\n<ul>\n<li>Microsoft Office 2016<\/li>\n<li>Microsoft Office 2019<\/li>\n<li>LTSC 2021 \u0648 2024<\/li>\n<li>\u062a\u0637\u0628\u064a\u0642\u0627\u062a Microsoft 365 enterprise<\/li>\n<\/ul>\n<p>\u0628\u0627\u0644\u0625\u0636\u0627\u0641\u0629 \u0625\u0644\u0649 \u0630\u0644\u0643\u060c \u0643\u0627\u0646 \u0627\u0644\u0633\u0628\u0628 \u0627\u0644\u062c\u0630\u0631\u064a \u0644\u0647\u0630\u0627 \u0627\u0644\u062a\u0647\u062f\u064a\u062f \u0647\u0648 \u0627\u0644\u0627\u0639\u062a\u0645\u0627\u062f \u0639\u0644\u0649 \u0645\u062f\u062e\u0644\u0627\u062a \u063a\u064a\u0631 \u0645\u0648\u062b\u0648\u0642\u0629 \u0641\u064a \u0642\u0631\u0627\u0631\u0627\u062a \u0627\u0644\u0623\u0645\u0627\u0646 CWE-807.<\/p>\n<h2><strong>\u0627\u0644\u062e\u0637\u0648\u0629 1: \u0625\u0639\u0627\u062f\u0629 \u062a\u0634\u063a\u064a\u0644 \u062a\u0637\u0628\u064a\u0642\u0627\u062a Office<\/strong><\/h2>\n<p>\u0637\u0631\u062d\u062a Microsoft \u0625\u0633\u062a\u0631\u0627\u062a\u064a\u062c\u064a\u0629 \u062a\u062e\u0641\u064a\u0641 \u064a\u062a\u0645 \u062a\u0641\u0639\u064a\u0644\u0647\u0627 \u062a\u0644\u0642\u0627\u0626\u064a\u064b\u0627 \u0641\u064a \u062d\u0627\u0644 \u0643\u0646\u062a \u062a\u0633\u062a\u062e\u062f\u0645 Microsoft 365 \u0623\u0648 Office 2021. \u0644\u0643\u0646\u0647\u0627 \u0644\u0627 \u062a\u0639\u0645\u0644 \u0625\u0644\u0627 \u0639\u0646\u062f \u0625\u0639\u0627\u062f\u0629 \u062a\u0634\u063a\u064a\u0644 \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a.<\/p>\n<h3><strong>\u0645\u0627 \u0627\u0644\u0630\u064a \u064a\u0645\u0643\u0646 \u0641\u0639\u0644\u0647\u061f<\/strong><\/h3>\n<ul>\n<li>\u062d\u062f\u062f \u0648\u0623\u063a\u0644\u0642 PowerPoint \u0648 Word \u0648 Excel \u0648 Outlook \u062a\u0645\u0627\u0645\u064b\u0627.<\/li>\n<li>\u0628\u0639\u062f \u0627\u0644\u0642\u064a\u0627\u0645 \u0628\u0630\u0644\u0643\u060c \u0623\u0639\u062f \u0641\u062a\u062d\u0647\u0627.<\/li>\n<li>\u0643\u0631\u0631 \u0646\u0641\u0633 \u0627\u0644\u062e\u0637\u0648\u0629 \u0639\u0644\u0649 \u062c\u0645\u064a\u0639 \u0623\u062c\u0647\u0632\u0629 \u0627\u0644\u0645\u0624\u0633\u0633\u0629.<\/li>\n<\/ul>\n<p>\u062a\u062c\u0628\u0631 \u0647\u0630\u0647 \u0627\u0644\u0637\u0631\u064a\u0642\u0629 Microsoft Office \u0639\u0644\u0649 \u0625\u0639\u0627\u062f\u0629 \u062a\u062d\u0645\u064a\u0644 \u062a\u0643\u0648\u064a\u0646\u0627\u062a \u0627\u0644\u0623\u0645\u0627\u0646 \u0627\u0644\u0645\u062d\u062f\u062b\u0629\u060c \u0645\u0645\u0627 \u064a\u0632\u064a\u062f \u0645\u0646 \u062d\u0638\u0631 \u0645\u0639\u0638\u0645 \u0646\u0648\u0627\u0642\u0644 \u0627\u0644\u0647\u062c\u0648\u0645 \u0627\u0644\u0634\u0627\u0626\u0639\u0629.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-30348\" src=\"https:\/\/www.dztecs.com\/tech\/wp-content\/uploads\/sites\/10\/2026\/02\/SS1-1.webp\" alt=\"\u062a\u0623\u0643\u062f \u0645\u0646 \u0625\u063a\u0644\u0627\u0642 \u062c\u0645\u064a\u0639 \u062a\u0637\u0628\u064a\u0642\u0627\u062a Office \u0628\u0627\u0644\u0643\u0627\u0645\u0644 \u0642\u0628\u0644 \u0625\u0639\u0627\u062f\u0629 \u0641\u062a\u062d\u0647\u0627\" width=\"728\" height=\"546\" srcset=\"https:\/\/www.dztecs.com\/tech\/wp-content\/uploads\/sites\/10\/2026\/02\/SS1-1.webp 728w, https:\/\/www.dztecs.com\/tech\/wp-content\/uploads\/sites\/10\/2026\/02\/SS1-1-400x300.webp 400w, https:\/\/www.dztecs.com\/tech\/wp-content\/uploads\/sites\/10\/2026\/02\/SS1-1-86x64.webp 86w\" sizes=\"auto, (max-width: 728px) 100vw, 728px\" \/><\/p>\n<p><strong>Image Credit <\/strong>WikiHowtech<\/p>\n<h2><strong>\u0627\u0644\u062e\u0637\u0648\u0629 2: \u0625\u0635\u0644\u0627\u062d \u0627\u0644\u062a\u0633\u062c\u064a\u0644 \u0644\u0640 Microsoft Office 2019 \u0648 2016<\/strong><\/h2>\n<p>\u0625\u0630\u0627 \u0643\u0627\u0646\u062a \u0634\u0631\u0643\u062a\u0643 \u062a\u0633\u062a\u062e\u062f\u0645 \u0628\u0627\u0644\u0641\u0639\u0644 Office 2019 \u0623\u0648 2016\u060c \u0641\u064a\u062c\u0628 \u0639\u0644\u064a\u0643 \u0627\u062a\u0628\u0627\u0639 \u0627\u0644\u0625\u0635\u0644\u0627\u062d \u0627\u0644\u064a\u062f\u0648\u064a \u0623\u062f\u0646\u0627\u0647 \u0641\u064a \u0633\u062c\u0644 <a href=\"https:\/\/www.dztecs.com\/tech\/how-to-fix-the-cannot-delete-key-error-in-the-windows-registry\/\">Windows<\/a>.<\/p>\n<p>\u0642\u0628\u0644 \u0625\u062c\u0631\u0627\u0621 \u0623\u064a \u062a\u063a\u064a\u064a\u0631\u0627\u062a:<\/p>\n<ul>\n<li>\u0627\u0646\u0642\u0631 \u0641\u0648\u0642 Win+R\u060c \u0648\u0627\u0643\u062a\u0628 <strong>regedit<\/strong>\u060c \u062b\u0645 \u0627\u0636\u063a\u0637 \u0639\u0644\u0649 Enter<\/li>\n<li>\u0641\u064a \u0645\u062d\u0631\u0631 \u0627\u0644\u062a\u0633\u062c\u064a\u0644\u060c \u0627\u062e\u062a\u0631 \u0645\u0644\u0641 \u062b\u0645 \u062a\u0635\u062f\u064a\u0631<\/li>\n<li>\u0628\u0627\u0644\u0625\u0636\u0627\u0641\u0629 \u0625\u0644\u0649 \u0630\u0644\u0643\u060c \u0627\u062d\u0641\u0638 \u0627\u0633\u0645 \u0627\u0644\u0645\u0644\u0641 \u0628\u0627\u0633\u0645 &#8220;Registry_Backup.reg&#8221; \u0641\u064a \u0646\u0638\u0627\u0645\u0643.<\/li>\n<\/ul>\n<h3><strong>\u062a\u0637\u0628\u064a\u0642 \u0627\u0644\u0625\u0635\u0644\u0627\u062d\u0627\u062a:<\/strong><\/h3>\n<p>\u0627\u0646\u062a\u0642\u0644 \u0648\u0627\u0628\u062d\u062b \u0639\u0646<\/p>\n<p>HKEY_LOCAL_MACHINESOFTWAREMicrosoftOffice16.0Common<\/p>\n<ul>\n<li>\u0627\u0636\u063a\u0637 \u0628\u0632\u0631 \u0627\u0644\u0645\u0627\u0648\u0633 \u0627\u0644\u0623\u064a\u0645\u0646 \u0639\u0644\u0649 <strong>Common<\/strong>\u060c \u0648\u0627\u062e\u062a\u0631 <strong>New<\/strong>\u060c \u062b\u0645 \u062d\u062f\u062f <strong>Key<\/strong><\/li>\n<li>\u0627\u0644\u0622\u0646\u060c \u064a\u062c\u0628 \u0639\u0644\u064a\u0643 \u062a\u0633\u0645\u064a\u0629 \u0627\u0644\u0645\u0641\u062a\u0627\u062d \u0628\u0627\u0633\u0645 {EAB22AC3-30C1-11CF-A7EB-0000C05BAE0B}.<\/li>\n<\/ul>\n<p>\u062b\u0645 \u062d\u062f\u062f \u0647\u0630\u0627 \u0627\u0644\u0645\u0641\u062a\u0627\u062d \u0627\u0644\u062c\u062f\u064a\u062f:<\/p>\n<ul>\n<li>\u0627\u0636\u063a\u0637 \u0628\u0632\u0631 \u0627\u0644\u0645\u0627\u0648\u0633 \u0627\u0644\u0623\u064a\u0645\u0646\u060c \u0648\u0627\u0646\u062a\u0642\u0644 \u0625\u0644\u0649 <strong>NEW<\/strong>\u060c \u062b\u0645 \u0627\u062e\u062a\u0631 <strong>DWORD value (32-bit)<\/strong><\/li>\n<li>\u0642\u0645 \u0628\u062a\u0633\u0645\u064a\u0629 \u0647\u0630\u0627 \u0628\u0627\u0633\u0645: <strong>Compatibility Flags<\/strong><\/li>\n<li>\u0628\u0639\u062f \u0627\u0644\u0642\u064a\u0627\u0645 \u0628\u0630\u0644\u0643\u060c \u0627\u0636\u063a\u0637 \u0646\u0642\u0631\u064b\u0627 \u0645\u0632\u062f\u0648\u062c\u064b\u0627 \u0648\u0642\u0645 \u0628\u062a\u0639\u064a\u064a\u0646 \u0627\u0644\u0642\u064a\u0645\u0629 \u0625\u0644\u0649: <strong>400<\/strong><\/li>\n<li>\u0627\u0636\u063a\u0637 <strong>OK<\/strong>\u060c \u062b\u0645 \u0623\u063a\u0644\u0642 \u0645\u062d\u0631\u0631 \u0627\u0644\u062a\u0633\u062c\u064a\u0644.<\/li>\n<li>\u0623\u062e\u064a\u0631\u064b\u0627\u060c \u0623\u0639\u062f \u062a\u0634\u063a\u064a\u0644 \u062c\u0647\u0627\u0632 \u0627\u0644\u0643\u0645\u0628\u064a\u0648\u062a\u0631 \u0627\u0644\u062e\u0627\u0635 \u0628\u0643.<\/li>\n<\/ul>\n<p>\u064a\u0642\u0648\u0645 \u0647\u0630\u0627 \u0627\u0644\u062a\u0639\u062f\u064a\u0644 \u0641\u064a \u0627\u0644\u062a\u0633\u062c\u064a\u0644 \u0628\u062d\u0638\u0631 \u0643\u0627\u0626\u0646 \u0636\u0639\u064a\u0641 \u0642\u062f \u064a\u0633\u064a\u0621 \u0627\u0633\u062a\u062e\u062f\u0627\u0645\u0647 \u0627\u0644\u0645\u0647\u0627\u062c\u0645\u0648\u0646.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-30349\" src=\"https:\/\/www.dztecs.com\/tech\/wp-content\/uploads\/sites\/10\/2026\/02\/create-1-1.png\" alt=\"\u062a\u0643\u0648\u064a\u0646 \u0627\u0644\u062a\u0633\u062c\u064a\u0644 \u0627\u0644\u0635\u062d\u064a\u062d \u0644\u062d\u0638\u0631 \u0627\u0633\u062a\u063a\u0644\u0627\u0644 CVE-2026-21509\" width=\"798\" height=\"483\" srcset=\"https:\/\/www.dztecs.com\/tech\/wp-content\/uploads\/sites\/10\/2026\/02\/create-1-1.png 798w, https:\/\/www.dztecs.com\/tech\/wp-content\/uploads\/sites\/10\/2026\/02\/create-1-1-400x242.png 400w, https:\/\/www.dztecs.com\/tech\/wp-content\/uploads\/sites\/10\/2026\/02\/create-1-1-768x465.png 768w\" sizes=\"auto, (max-width: 798px) 100vw, 798px\" \/><\/p>\n<p><strong>Image Credit <\/strong>Land FX<\/p>\n<h2><strong>\u0627\u0644\u062e\u0637\u0648\u0629 3: \u062a\u0639\u0632\u064a\u0632 Outlook \u0636\u062f \u0627\u0644\u0645\u0631\u0641\u0642\u0627\u062a<\/strong><\/h2>\n<p>\u0623\u0647\u0645 \u0634\u064a\u0621 \u064a\u062c\u0628 \u0645\u0644\u0627\u062d\u0638\u062a\u0647 \u0647\u0648 \u0623\u0646 \u0645\u0639\u0638\u0645 \u0627\u0644\u0647\u062c\u0645\u0627\u062a \u0627\u0644\u0645\u0631\u062a\u0628\u0637\u0629 \u0628\u0640 CVE-2026-21509 \u062a\u0628\u062f\u0623 \u0628\u0631\u0633\u0627\u0626\u0644 \u0628\u0631\u064a\u062f \u0625\u0644\u0643\u062a\u0631\u0648\u0646\u064a \u062a\u0635\u064a\u062f\u064a\u0629. \u0648\u0628\u0627\u0644\u062a\u0627\u0644\u064a\u060c \u064a\u062c\u0628 \u0639\u0644\u064a\u0643 \u062a\u0642\u0648\u064a\u0629 \u062f\u0641\u0627\u0639\u0627\u062a\u0643 \u0645\u0646 \u062e\u0644\u0627\u0644 \u0625\u0639\u062f\u0627\u062f\u0627\u062a Outlook:<\/p>\n<h3><strong>\u0627\u0644\u062e\u064a\u0627\u0631\u0627\u062a \u0627\u0644\u0645\u0648\u0635\u0649 \u0628\u0647\u0627:<\/strong><\/h3>\n<ul>\n<li>\u0625\u064a\u0642\u0627\u0641 \u062a\u0634\u063a\u064a\u0644 \u0627\u0644\u0645\u0639\u0627\u064a\u0646\u0629 \u0627\u0644\u062a\u0644\u0642\u0627\u0626\u064a\u0629.<\/li>\n<li>\u062a\u0639\u0637\u064a\u0644 \u0627\u0644\u062a\u062d\u0645\u064a\u0644 \u0627\u0644\u062a\u0644\u0642\u0627\u0626\u064a \u0644\u0623\u064a \u0645\u062d\u062a\u0648\u0649 \u062e\u0627\u0631\u062c\u064a.<\/li>\n<li>\u0623\u064a\u0636\u064b\u0627\u060c \u062a\u0623\u0643\u062f \u0645\u0646 \u0623\u0646\u0643 \u062a\u0633\u062a\u062e\u062f\u0645 \u0637\u0631\u064a\u0642\u0629 \u0627\u0644\u0639\u0631\u0636 \u0627\u0644\u0645\u062d\u0645\u064a\u0629 \u0641\u0642\u0637.<\/li>\n<\/ul>\n<p>\u0627\u0646\u0642\u0631 \u0639\u0644\u0649 \u0645\u0644\u0641\u060c \u062b\u0645 \u062d\u062f\u062f \u062e\u064a\u0627\u0631\u0627\u062a\u060c \u0648\u0627\u0646\u062a\u0642\u0644 \u0625\u0644\u0649 \u0645\u0631\u0643\u0632 \u0627\u0644\u062a\u0648\u062b\u064a\u0642\u060c \u062b\u0645 \u0625\u0639\u062f\u0627\u062f\u0627\u062a\u060c \u0648\u0627\u062e\u062a\u0631 \u0645\u0639\u0627\u0644\u062c\u0629 \u0627\u0644\u0645\u0631\u0641\u0642\u0627\u062a.<\/p>\n<h2><strong>\u0646\u0635\u0627\u0626\u062d \u0644\u062a\u062c\u0646\u0628 \u0627\u0644\u062a\u0635\u064a\u062f \u0627\u0644\u0627\u062d\u062a\u064a\u0627\u0644\u064a:<\/strong><\/h2>\n<p>\u062f\u0631\u0628 \u0645\u0648\u0638\u0641\u064a\u0643 \u0644\u0623\u0646 \u0627\u0644\u062a\u0643\u0646\u0648\u0644\u0648\u062c\u064a\u0627 \u0648\u062d\u062f\u0647\u0627 \u0644\u0627 \u062a\u0643\u0641\u064a \u0644\u062a\u062c\u0646\u0628 \u0647\u0630\u0647 \u0627\u0644\u0647\u062c\u0645\u0627\u062a.<\/p>\n<h3><strong>\u0636\u0639 \u0641\u064a \u0627\u0639\u062a\u0628\u0627\u0631\u0643 \u0627\u0644\u0639\u0644\u0627\u0645\u0627\u062a \u0627\u0644\u062a\u062d\u0630\u064a\u0631\u064a\u0629:<\/strong><\/h3>\n<ul>\n<li>\u0631\u0633\u0627\u0626\u0644 \u0627\u0644\u0628\u0631\u064a\u062f \u0627\u0644\u0625\u0644\u0643\u062a\u0631\u0648\u0646\u064a \u0627\u0644\u062a\u064a \u062a\u0641\u064a\u062f \u0628\u0627\u0644\u0627\u0633\u062a\u0639\u062c\u0627\u0644\u060c \u0645\u062b\u0644 &#8220;\u0627\u0641\u062a\u062d \u0639\u0644\u0649 \u0627\u0644\u0641\u0648\u0631&#8221; \u0623\u0648 &#8220;\u062a\u0645 \u062d\u0638\u0631 \u0627\u0644\u062d\u0633\u0627\u0628&#8221;.<\/li>\n<li>\u0639\u0646\u0627\u0648\u064a\u0646 \u0627\u0644\u0645\u0631\u0633\u0644\u064a\u0646 \u0627\u0644\u062a\u064a \u0642\u062f \u062a\u0628\u062f\u0648 \u063a\u0631\u064a\u0628\u0629. \u0639\u0644\u0649 \u0633\u0628\u064a\u0644 \u0627\u0644\u0645\u062b\u0627\u0644\u060c support@microsoft.com.<\/li>\n<li>\u062a\u0644\u0642\u064a \u0627\u0644\u0641\u0648\u0627\u062a\u064a\u0631 \u0648\u0625\u0634\u0639\u0627\u0631\u0627\u062a \u0627\u0644\u062a\u0633\u0644\u064a\u0645 \u063a\u064a\u0631 \u0627\u0644\u0645\u062a\u0648\u0642\u0639\u0629.<\/li>\n<li>\u0639\u0644\u0627\u0648\u0629 \u0639\u0644\u0649 \u0630\u0644\u0643\u060c \u0627\u0644\u062d\u0635\u0648\u0644 \u0639\u0644\u0649 \u0645\u0644\u0641\u0627\u062a \u0645\u0636\u063a\u0648\u0637\u0629 \u0628\u0623\u0646\u0648\u0627\u0639 \u063a\u064a\u0631 \u0639\u0627\u062f\u064a\u0629 \u0645\u062b\u0644 .img \u0648 .iso \u0648 .hta.<\/li>\n<li>\u0627\u0644\u0631\u0648\u0627\u0628\u0637 \u0627\u0644\u062a\u064a \u0644\u064a\u0633\u062a \u0645\u062a\u0632\u0627\u0645\u0646\u0629 \u0645\u0639 \u0646\u0637\u0627\u0642 \u0627\u0644\u0645\u0631\u0633\u0644.<\/li>\n<\/ul>\n<h3><strong>\u0639\u0627\u062f\u0627\u062a \u0622\u0645\u0646\u0629:<\/strong><\/h3>\n<ul>\n<li>\u062a\u0623\u0643\u062f \u0645\u0646 \u0627\u0644\u062a\u062d\u0642\u0642 \u0645\u0646 \u0627\u0644\u0637\u0644\u0628\u0627\u062a \u0639\u0628\u0631 \u0627\u0644\u0647\u0627\u062a\u0641 \u0623\u0648 \u0627\u0644\u062f\u0631\u062f\u0634\u0629.<\/li>\n<li>\u0645\u0631\u0631 \u0645\u0624\u0634\u0631 \u0627\u0644\u0645\u0627\u0648\u0633 \u0641\u0648\u0642 \u0623\u064a \u0631\u0627\u0628\u0637 \u0642\u0628\u0644 \u0627\u0644\u0646\u0642\u0631 \u0639\u0644\u064a\u0647.<\/li>\n<li>\u0623\u0628\u0644\u063a \u0639\u0646 \u0631\u0633\u0627\u0626\u0644 \u0627\u0644\u0628\u0631\u064a\u062f \u0627\u0644\u0625\u0644\u0643\u062a\u0631\u0648\u0646\u064a \u0627\u0644\u0645\u0634\u0628\u0648\u0647\u0629 \u0641\u0648\u0631\u064b\u0627 \u0625\u0644\u0649 \u0642\u0633\u0645 \u062a\u0643\u0646\u0648\u0644\u0648\u062c\u064a\u0627 \u0627\u0644\u0645\u0639\u0644\u0648\u0645\u0627\u062a.<\/li>\n<li>\u0644\u0627 \u062a\u0642\u0645 \u0628\u062a\u0645\u0643\u064a\u0646 \u0648\u062d\u062f\u0627\u062a \u0627\u0644\u0645\u0627\u0643\u0631\u0648 \u0641\u064a \u0627\u0644\u0645\u0633\u062a\u0646\u062f\u0627\u062a.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u0641\u064a \u0627\u0644\u0622\u0648\u0646\u0629 \u0627\u0644\u0623\u062e\u064a\u0631\u0629\u060c \u0641\u064a 26 \u064a\u0646\u0627\u064a\u0631 2026\u060c \u0633\u0627\u0631\u0639\u062a \u0634\u0631\u0643\u0629 Microsoft \u0625\u0644\u0649 \u0625\u0635\u062f\u0627\u0631 \u062a\u062d\u062f\u064a\u062b \u0639\u0627\u062c\u0644 \u0630\u064a \u062e\u0637\u0648\u0631\u0629 \u0639\u0627\u0644\u064a\u0629 \u0644\u0645\u0639\u0627\u0644\u062c\u0629 \u062b\u063a\u0631\u0629 zero-day \u0641\u064a Microsoft Office \u062a\u0633\u0645\u062d \u0644\u0644\u062c\u0647\u0627\u062a \u0627\u0644\u062e\u0628\u064a\u062b\u0629 \u0628\u062a\u062c\u0627\u0648\u0632 \u0627\u0644\u0645\u064a\u0632\u0627\u062a \u0627\u0644\u0623\u0645\u0646\u064a\u0629. \u0648\u064a\u0634\u0627\u0631 \u0625\u0644\u0649 \u0647\u0630\u0647 \u0627\u0644\u062b\u063a\u0631\u0629 \u0628\u0627\u0644\u0631\u0642\u0645 CVE-2026-21509. \u062a\u0638\u0644 \u0645\u0643\u0648\u0646\u0627\u062a Microsoft Office \u0647\u062f\u0641\u064b\u0627 \u062c\u0630\u0627\u0628\u064b\u0627 \u0644\u062b\u063a\u0631\u0627\u062a zero-day. \u0646\u0638\u0631\u064b\u0627 \u0644\u0623\u0646 Microsoft Office \u064a\u0645\u062b\u0644 \u0627\u0644\u0639\u0645\u0648\u062f \u0627\u0644\u0641\u0642\u0631\u064a \u0644\u0644\u0645\u0624\u0633\u0633\u0627\u062a\u060c \u0628\u062f\u0621\u064b\u0627 \u0645\u0646 \u0627\u0644\u0628\u0631\u064a\u062f \u0627\u0644\u0625\u0644\u0643\u062a\u0631\u0648\u0646\u064a [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":30350,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[11],"class_list":["post-30346","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tech","tag-11"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>\u062d\u0645\u0627\u064a\u0629 Office \u0645\u0646 \u062b\u063a\u0631\u0629 CVE-2026-21509: \u062f\u0644\u064a\u0644 \u062e\u0637\u0648\u0629 \u0628\u062e\u0637\u0648\u0629<\/title>\n<meta name=\"description\" content=\"\u0641\u064a \u0627\u0644\u0622\u0648\u0646\u0629 \u0627\u0644\u0623\u062e\u064a\u0631\u0629\u060c \u0641\u064a 26 \u064a\u0646\u0627\u064a\u0631 2026\u060c \u0633\u0627\u0631\u0639\u062a \u0634\u0631\u0643\u0629 Microsoft \u0625\u0644\u0649 \u0625\u0635\u062f\u0627\u0631 \u062a\u062d\u062f\u064a\u062b \u0639\u0627\u062c\u0644 \u0630\u064a \u062e\u0637\u0648\u0631\u0629 \u0639\u0627\u0644\u064a\u0629 \u0644\u0645\u0639\u0627\u0644\u062c\u0629 \u062b\u063a\u0631\u0629 zero-day \u0641\u064a Microsoft Office \u062a\u0633\u0645\u062d \u0644\u0644\u062c\u0647\u0627\u062a\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.dztecs.com\/tech\/protecting-office-from-the-cve-2026-21509-vulnerability-a-step-by-step-guide\/\" \/>\n<meta property=\"og:locale\" content=\"ar_AR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u062d\u0645\u0627\u064a\u0629 Office \u0645\u0646 \u062b\u063a\u0631\u0629 CVE-2026-21509: \u062f\u0644\u064a\u0644 \u062e\u0637\u0648\u0629 \u0628\u062e\u0637\u0648\u0629\" \/>\n<meta property=\"og:description\" content=\"\u0641\u064a \u0627\u0644\u0622\u0648\u0646\u0629 \u0627\u0644\u0623\u062e\u064a\u0631\u0629\u060c \u0641\u064a 26 \u064a\u0646\u0627\u064a\u0631 2026\u060c \u0633\u0627\u0631\u0639\u062a \u0634\u0631\u0643\u0629 Microsoft \u0625\u0644\u0649 \u0625\u0635\u062f\u0627\u0631 \u062a\u062d\u062f\u064a\u062b \u0639\u0627\u062c\u0644 \u0630\u064a \u062e\u0637\u0648\u0631\u0629 \u0639\u0627\u0644\u064a\u0629 \u0644\u0645\u0639\u0627\u0644\u062c\u0629 \u062b\u063a\u0631\u0629 zero-day \u0641\u064a Microsoft Office \u062a\u0633\u0645\u062d \u0644\u0644\u062c\u0647\u0627\u062a\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.dztecs.com\/tech\/protecting-office-from-the-cve-2026-21509-vulnerability-a-step-by-step-guide\/\" \/>\n<meta property=\"og:site_name\" content=\"DzTecnium - Tech\" \/>\n<meta property=\"article:published_time\" content=\"2026-02-28T21:32:20+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.dztecs.com\/tech\/wp-content\/uploads\/sites\/10\/2026\/02\/SS1-2.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"728\" \/>\n\t<meta property=\"og:image:height\" content=\"546\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"author\" content=\"Merwan Redha\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.dztecs.com\\\/tech\\\/protecting-office-from-the-cve-2026-21509-vulnerability-a-step-by-step-guide\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.dztecs.com\\\/tech\\\/protecting-office-from-the-cve-2026-21509-vulnerability-a-step-by-step-guide\\\/\"},\"author\":{\"name\":\"Merwan 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