{"id":12899,"date":"2026-05-15T10:04:19","date_gmt":"2026-05-15T10:04:19","guid":{"rendered":"https:\/\/serisec.com\/index.php\/2026\/05\/15\/microsoft-warns-of-exchange-zero-day-flaw-exploited-in-attacks\/"},"modified":"2026-05-15T10:04:19","modified_gmt":"2026-05-15T10:04:19","slug":"microsoft-warns-of-exchange-zero-day-flaw-exploited-in-attacks","status":"publish","type":"post","link":"https:\/\/serisec.com\/index.php\/2026\/05\/15\/microsoft-warns-of-exchange-zero-day-flaw-exploited-in-attacks\/","title":{"rendered":"Microsoft warns of Exchange zero-day flaw exploited in attacks"},"content":{"rendered":"<p>    Microsoft warns of Exchange zero-day flaw exploited in attacks<br \/>\n \t<BR><br \/>\n<BR><\/BR><br \/>\n    <!-- no image --><br \/>\n \t<BR><br \/>\n<BR><\/BR><\/p>\n<div>On Thursday, Microsoft shared mitigations for a high-severity Exchange Server vulnerability exploited in attacks that allow threat actors to execute arbitrary code via cross-site scripting (XSS) while targeting Outlook on the web users. [&#8230;]<\/div>\n<p> \t<BR><br \/>\n <BR><\/BR><br \/>\n    Sergiu Gatlan<br \/>\n \t<BR><br \/>\n<BR><\/BR><br \/>\n<a href=\"https:\/\/www.bleepingcomputer.com\/news\/microsoft\/microsoft-warns-of-exchange-zero-day-flaw-exploited-in-attacks\/\">Go to bleepingcomputer<\/a><br \/>\n \t<BR><br \/>\n <BR><\/BR><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Microsoft warns of Exchange zero-day flaw exploited in attacks On Thursday, Microsoft shared mitigations for a high-severity Exchange Server vulnerability exploited in attacks that allow threat actors to execute arbitrary code via cross-site scripting (XSS) while targeting Outlook on the web users. [&#8230;] Sergiu Gatlan Go to bleepingcomputer<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[64,158,133],"tags":[80],"class_list":["post-12899","post","type-post","status-publish","format-standard","hentry","category-bleepingcomputer","category-microsoft","category-security","tag-bleepingcomputer"],"_links":{"self":[{"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/posts\/12899"}],"collection":[{"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/comments?post=12899"}],"version-history":[{"count":0,"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/posts\/12899\/revisions"}],"wp:attachment":[{"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/media?parent=12899"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/categories?post=12899"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/tags?post=12899"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}