{"id":225313,"date":"2026-03-19T06:06:00","date_gmt":"2026-03-19T10:06:00","guid":{"rendered":"https:\/\/news-you-need.com\/index.php\/2026\/03\/19\/critical-microsoft-sharepoint-flaw-now-exploited-in-attacks\/"},"modified":"2026-03-19T10:50:14","modified_gmt":"2026-03-19T14:50:14","slug":"critical-microsoft-sharepoint-flaw-now-exploited-in-attacks","status":"publish","type":"post","link":"https:\/\/news-you-need.com\/index.php\/2026\/03\/19\/critical-microsoft-sharepoint-flaw-now-exploited-in-attacks\/","title":{"rendered":"Critical Microsoft SharePoint flaw now exploited in attacks"},"content":{"rendered":"<p><a href=\"https:\/\/www.bleepingcomputer.com\/news\/microsoft\/critical-microsoft-sharepoint-flaw-now-exploited-in-attacks\/\">Critical Microsoft SharePoint flaw now exploited in attacks<\/a><\/p>\n<p><a href=\"https:\/\/www.bleepingcomputer.com\/news\/microsoft\/critical-microsoft-sharepoint-flaw-now-exploited-in-attacks\/\">https:\/\/www.bleepingcomputer.com\/news\/microsoft\/critical-microsoft-sharepoint-flaw-now-exploited-in-attacks\/<\/a><\/p>\n<p>Publish Date: <a href=\"publish_date]\">2026-03-19 06:06:00<\/a><\/p>\n<p>Source Domain: <a href=\"www.bleepingcomputer.com\">www.bleepingcomputer.com<\/a><\/p>\n<p style=\"text-align:center\">\n<p>A critical Microsoft SharePoint vulnerability patched in January is now being exploited in attacks, the Cybersecurity and Infrastructure Security Agency (CISA) warned.<\/p>\n<p>Tracked as CVE-2026-20963, this security flaw affects SharePoint Enterprise Server 2016, SharePoint Server 2019, and SharePoint Server Subscription Edition.<\/p>\n<p>SharePoint Server 2007, SharePoint Server 2010, and SharePoint Server 2013 are also vulnerable to attacks but are end-of-support and no longer\u00a0receive security updates. Admins are advised to upgrade\u00a0end-of-support SharePoint Server versions to a supported version to block attacks.<\/p>\n<p>Successful exploitation enables threat actors without privileges to achieve remote code execution on unpatched servers in low-complexity attacks that exploit a deserialization of untrusted data weakness.<\/p>\n<p>&#8220;In a network-based attack, an unauthenticated attacker could write arbitrary code to inject and execute code remotely on the SharePoint Server,&#8221; Microsoft said when it patched the vulnerability as part of its January 2026 Patch Tuesday.<\/p>\n<p>While Microsoft updated its CVE-2026-20963 advisory this Tuesday, the company has yet to flag it as exploited in the wild.<\/p>\n<p>However, CISA added the security flaw to its catalog of actively exploited vulnerabilities and ordered Federal Civilian Executive Branch (FCEB) agencies to secure their servers by Saturday, March 21.<\/p>\n<p>FCEB agencies are non-military U.S. executive branch agencies, such as the Department of Homeland Security, the Department of Energy, the Department of Justice, and the Department of State.<\/p>\n<p>CISA didn&#8217;t provide further information on these ongoing CVE-2026-20963 attacks and has yet to find any evidence that it&#8217;s being exploited in ransomware attacks.<\/p>\n<p>Even though BOD 22-01 targets only federal agencies, CISA &#8220;strongly&#8221; urged all network defenders to patch their devices against exploitation of CVE-2025-40551 as soon as possible.<\/p>\n<p>&#8220;This type of vulnerability is a frequent attack vector for malicious&#8230;<\/p>\n<p><a href=\"https:\/\/www.bleepingcomputer.com\/news\/microsoft\/critical-microsoft-sharepoint-flaw-now-exploited-in-attacks\/\">Source<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Critical Microsoft SharePoint flaw now exploited in attacks https:\/\/www.bleepingcomputer.com\/news\/microsoft\/critical-microsoft-sharepoint-flaw-now-exploited-in-attacks\/ Publish Date: 2026-03-19 06:06:00 Source Domain:&#8230;<\/p>\n","protected":false},"author":1,"featured_media":225314,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"https:\/\/www.bleepstatic.com\/content\/hl-images\/2026\/03\/19\/Microsoft-Sharepoint.jpg","fifu_image_alt":"","footnotes":""},"categories":[15],"tags":[24,31,27],"class_list":["post-225313","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cybersecurity","tag-cybersecurity","tag-exploit","tag-vulnerability"],"_links":{"self":[{"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/posts\/225313"}],"collection":[{"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/comments?post=225313"}],"version-history":[{"count":1,"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/posts\/225313\/revisions"}],"predecessor-version":[{"id":225315,"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/posts\/225313\/revisions\/225315"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/media\/225314"}],"wp:attachment":[{"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/media?parent=225313"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/categories?post=225313"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/tags?post=225313"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}