{"id":232400,"date":"2026-04-08T05:16:00","date_gmt":"2026-04-08T09:16:00","guid":{"rendered":"https:\/\/news-you-need.com\/index.php\/2026\/04\/08\/anthropics-claude-mythos-finds-thousands-of-zero-day-flaws-across-major-systems\/"},"modified":"2026-04-08T05:45:15","modified_gmt":"2026-04-08T09:45:15","slug":"anthropics-claude-mythos-finds-thousands-of-zero-day-flaws-across-major-systems","status":"publish","type":"post","link":"https:\/\/news-you-need.com\/index.php\/2026\/04\/08\/anthropics-claude-mythos-finds-thousands-of-zero-day-flaws-across-major-systems\/","title":{"rendered":"Anthropic&#8217;s Claude Mythos Finds Thousands of Zero-Day Flaws Across Major Systems"},"content":{"rendered":"<p><a href=\"https:\/\/thehackernews.com\/2026\/04\/anthropics-claude-mythos-finds.html\">Anthropic&#8217;s Claude Mythos Finds Thousands of Zero-Day Flaws Across Major Systems<\/a><\/p>\n<p><a href=\"https:\/\/thehackernews.com\/2026\/04\/anthropics-claude-mythos-finds.html\">https:\/\/thehackernews.com\/2026\/04\/anthropics-claude-mythos-finds.html<\/a><\/p>\n<p>Publish Date: <a href=\"publish_date]\">2026-04-08 05:16:00<\/a><\/p>\n<p>Source Domain: <a href=\"thehackernews.com\">thehackernews.com<\/a><\/p>\n<p><span class=\"p-author\">\ue804<span class=\"author\">Ravie Lakshmanan<\/span>\ue802<span class=\"author\">Apr 08, 2026<\/span><\/span><span class=\"p-tags\">Artificial Intelligence \/ Secure Coding<\/span><\/p>\n<p>Artificial Intelligence (AI) company Anthropic announced a new cybersecurity initiative\u00a0called <strong>Project\u00a0Glasswing\u00a0<\/strong>that\u00a0will use a preview version of its new frontier model, Claude Mythos,\u00a0to find and address security vulnerabilities.<\/p>\n<p>The model will\u00a0be used by\u00a0a small\u00a0set of organizations, including Amazon Web Services, Apple, Broadcom, Cisco, CrowdStrike,\u00a0Google, JPMorgan Chase, the Linux Foundation, Microsoft, NVIDIA, and Palo Alto\u00a0Networks, along\u00a0with Anthropic, to secure critical\u00a0software.<\/p>\n<p>The company said it&#8217;s forming this initiative in response to capabilities observed in its general-purpose frontier model that demonstrate a &#8220;level of coding capability where they can surpass all but the most skilled humans at finding and exploiting software vulnerabilities.&#8221; Because\u00a0of its cybersecurity capabilities and concerns\u00a0that they\u00a0could be\u00a0abused, Anthropic has opted not to\u00a0make the\u00a0model generally available.<\/p>\n<p>Mythos\u00a0Preview, Anthropic\u00a0claimed, has\u00a0already discovered thousands of high-severity zero-day vulnerabilities in every major operating system and web browser. Some\u00a0of these include a now-patched 27-year-old bug in OpenBSD, a 16-year-old flaw in FFmpeg, and a memory-corrupting vulnerability in a memory-safe virtual machine\u00a0monitor.<\/p>\n<p>In one instance highlighted by the company, Mython Preview is said to have autonomously come\u00a0with a web browser exploit that chained together four vulnerabilities to escape the renderer and operating system sandboxes. Anthropic\u00a0also noted in the preview&#8217;s system card that the model solved a corporate network attack simulation that would have taken a human expert more than 10\u00a0hours.<\/p>\n<p>In perhaps what&#8217;s one of the most eyebrow-raising findings, Mythos Preview managed to follow instructions from a researcher running an evaluation to escape a secured &#8220;sandbox&#8221;\u00a0computer it was provided\u00a0with, indicating a &#8220;potentially dangerous capability&#8221;&#8230;<\/p>\n<p><a href=\"https:\/\/thehackernews.com\/2026\/04\/anthropics-claude-mythos-finds.html\">Source<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Anthropic&#8217;s Claude Mythos Finds Thousands of Zero-Day Flaws Across Major Systems https:\/\/thehackernews.com\/2026\/04\/anthropics-claude-mythos-finds.html Publish Date: 2026-04-08&#8230;<\/p>\n","protected":false},"author":1,"featured_media":232401,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"https:\/\/blogger.googleusercontent.com\/img\/b\/R29vZ2xl\/AVvXsEihvGfSh39Lhl5ird3iuR-T4gkaVejmXgtJ4VwbkLxAqG2hBZWkqQ8LR5k8wfuapt8oUdtifp8Le-uA6Xep8kGe3BRCx5qM1vY9DiMCnMgTFeFK8bc0wBSUR62TjZgPZ9dviGiM8-4-xW1N-ZGSDxIY0uJLFmEKDt1Z9rbttd7Lg_mma6Kt_2qk89vjq9Ed\/s1600\/claude-mythos.png","fifu_image_alt":"","footnotes":""},"categories":[14],"tags":[31,89,57,27],"class_list":["post-232400","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-artificial-intelligence","tag-exploit","tag-flaw","tag-security","tag-vulnerability"],"_links":{"self":[{"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/posts\/232400"}],"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=232400"}],"version-history":[{"count":1,"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/posts\/232400\/revisions"}],"predecessor-version":[{"id":232402,"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/posts\/232400\/revisions\/232402"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/media\/232401"}],"wp:attachment":[{"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/media?parent=232400"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/categories?post=232400"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/tags?post=232400"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}