{"id":85612,"date":"2025-11-05T08:58:35","date_gmt":"2025-11-05T08:58:35","guid":{"rendered":""},"modified":"2025-11-11T11:04:13","modified_gmt":"2025-11-11T17:04:13","slug":"cve-2025-55224-race-condition-vulnerability-in-windows-win32k-grfx","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-55224-race-condition-vulnerability-in-windows-win32k-grfx\/","title":{"rendered":"<strong>CVE-2025-55224: Race Condition Vulnerability in Windows Win32K &#8211; GRFX<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>The CVE-2025-55224 is a critical vulnerability discovered in the Windows Win32K &#8211; GRFX system. This vulnerability arises due to a race condition where concurrent execution using shared resources lacks proper synchronization. In certain circumstances, this vulnerability can be exploited by an authorized attacker to execute codes locally, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49668-heap-based-buffer-overflow-in-windows-rras-resulting-in-potential-system-compromise\/\"  data-wpil-monitor-id=\"92430\">potentially leading to system<\/a> compromise or data leakage.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-55224<br \/>\nSeverity: High (7.8 CVSS score)<br \/>\nAttack Vector: Local<br \/>\nPrivileges Required: Low<br \/>\nUser Interaction: Required<br \/>\nImpact: Potential system compromise or data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-3267028079\" class=\"ameeb-content-2 ameeb-entity-placement\"><div style=\"border-left: 4px solid #555; padding-left: 20px; margin: 48px 0; font-family: Roboto, sans-serif; color: #ffffff; line-height: 1.6; max-width: 700px;\">\r\n  <h2 style=\"margin-top: 0; font-size: 20px; font-weight: 600; display: flex; align-items: center;\">\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\" style=\"display: inline-flex; align-items: center; margin-right: 8px;\">\r\n      <img decoding=\"async\" src=\"https:\/\/www.ameeba.com\/blog\/wp-content\/uploads\/2025\/10\/Best-App-icon-Ameeba.png\" alt=\"Ameeba Chat Icon\" style=\"width: 40px; height: 40px;\" \/>\r\n    <\/a>\r\n    A new way to communicate\r\n  <\/h2>\r\n\r\n  <p style=\"margin-bottom: 12px;\">\r\n    Ameeba Chat is built on encrypted identity, not personal profiles.\r\n  <\/p>\r\n\r\n  <p style=\"margin-bottom: 16px;\">\r\n    Message, call, share files, and coordinate with identities kept separate.\r\n  <\/p>\r\n\r\n  <ul style=\"list-style: none; padding-left: 0; margin-bottom: 20px;\">\r\n    <li>\u2022 Encrypted identity<\/li>\r\n    <li>\u2022 Ameeba Chat authenticates access<\/li>\r\n    <li>\u2022 Aliases and categories<\/li>\r\n    <li>\u2022 End-to-end encrypted chat, calls, and files<\/li>\r\n    <li>\u2022 Secure notes for sensitive information<\/li>\r\n  <\/ul>\r\n\r\n  <p style=\"font-style: italic; font-weight: 600; margin-bottom: 24px;\">\r\n    Private communication, rethought.\r\n  <\/p>\r\n\r\n  <div style=\"display: flex; flex-wrap: wrap; gap: 12px;\">\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\/download\" style=\"background-color: #ffffff; color: #000000; padding: 10px 20px; text-decoration: none; border-radius: 6px; font-weight: 500;\">Download Ameeba Chat<\/a>\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\" style=\"border: 1px solid #ffffff; color: #ffffff; padding: 10px 20px; text-decoration: none; border-radius: 6px; font-weight: 500;\">Learn More<\/a>\r\n  <\/div>\r\n<\/div>\r\n<\/div>\n<p>Product | Affected Versions<\/p>\n<p>Windows Win32K &#8211; GRFX | All versions prior to patch<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>This vulnerability is a race condition in Windows Win32K &#8211; GRFX, where shared resources are accessed concurrently without proper synchronization. This flaw could allow an authenticated, local attacker to exploit this vulnerability by running a specially crafted program designed to introduce race conditions. This would potentially allow the attacker to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-2945-critical-remote-code-execution-vulnerability-in-pgadmin-4\/\"  data-wpil-monitor-id=\"92519\">execute arbitrary code<\/a> with elevated privileges, leading to a complete system compromise or data leakage.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-2550093219\" class=\"ameeb-content ameeb-entity-placement\"><div class=\"poptin-embedded\" data-id=\"f6b387694f681\"><\/div>\r\n\r\n\r\n\r\n\r\n\r\n<\/div>\n<p>Below is a conceptual representation of how malicious code may attempt to exploit this vulnerability:<\/p>\n<pre><code class=\"\" data-line=\"\"># This is a conceptual code snippet and may not work as is\n# Start a concurrent process\nstart \/b cmd \/c &quot;vulnerable_program.exe&quot;\n# Introduce a delay to make the race condition more likely\ntimeout \/t 1\n# Run the malicious code that exploits the race condition\nmalicious_program.exe<\/code><\/pre>\n<p>Please note that this is a conceptual example only and not actual exploit code. This pseudo-code shows the attacker launching a vulnerable program, introducing a delay, and then running a malicious program designed to exploit the race condition.<\/p>\n<p><strong>Mitigation Guidance<\/strong><\/p>\n<p>The best way to mitigate this vulnerability is to apply the patch provided by the vendor as soon as it is available. If the patch is not available or cannot be applied immediately, a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can be used as a temporary mitigation measure to detect and block attempts to exploit this vulnerability. However, these measures do not entirely eliminate the risk, and patching the vulnerability should be prioritized.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview The CVE-2025-55224 is a critical vulnerability discovered in the Windows Win32K &#8211; GRFX system. This vulnerability arises due to a race condition where concurrent execution using shared resources lacks proper synchronization. In certain circumstances, this vulnerability can be exploited by an authorized attacker to execute codes locally, potentially leading to system compromise or data [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"footnotes":""},"categories":[1],"tags":[],"vendor":[82],"product":[],"attack_vector":[],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-85612","post","type-post","status-publish","format-standard","hentry","category-uncategorized","vendor-microsoft"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/85612","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/comments?post=85612"}],"version-history":[{"count":2,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/85612\/revisions"}],"predecessor-version":[{"id":85804,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/85612\/revisions\/85804"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=85612"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=85612"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=85612"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=85612"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=85612"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=85612"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=85612"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=85612"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=85612"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}