{"id":56039,"date":"2025-06-30T00:35:18","date_gmt":"2025-06-30T00:35:18","guid":{"rendered":""},"modified":"2025-08-30T04:38:32","modified_gmt":"2025-08-30T10:38:32","slug":"cve-2025-5868-critical-vulnerability-in-rt-thread-leading-to-system-compromise-and-data-leakage","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-5868-critical-vulnerability-in-rt-thread-leading-to-system-compromise-and-data-leakage\/","title":{"rendered":"<strong>CVE-2025-5868: Critical Vulnerability in RT-Thread Leading to System Compromise and Data Leakage<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>A critical vulnerability, identified as CVE-2025-5868, has been detected in RT-Thread 5.1.0. Affecting the sys_thread_sigprocmask function in rt-thread\/components\/lwp\/lwp_syscall.c, this vulnerability poses a significant threat to systems running the aforementioned version of RT-Thread. With a CVSS Severity Score of 8.0, the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-31919-deserialization-of-untrusted-data-vulnerability-in-themeton-spare\/\"  data-wpil-monitor-id=\"62341\">vulnerability has the potential to lead to system<\/a> compromise or data leakage, thus causing significant damage to the affected system or organization.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-5868<br \/>\nSeverity: Critical (8.0)<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49415-path-traversal-vulnerability-in-fw-gallery-with-potential-for-system-compromise\/\"  data-wpil-monitor-id=\"62395\">System compromise and potential<\/a> data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-3141188897\" 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>RT-Thread | 5.1.0<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-43586-adobe-commerce-improper-access-control-vulnerability-leading-to-privilege-escalation\/\"  data-wpil-monitor-id=\"63135\">vulnerability arises from an improper<\/a> validation of an array index in the sys_thread_sigprocmask function of the file rt-thread\/components\/lwp\/lwp_syscall.c. The manipulation of the &#8216;how&#8217; argument, which is intended to specify the way in which the function should behave, can lead to an <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-48706-out-of-bounds-read-vulnerability-in-coros-pace-3\/\"  data-wpil-monitor-id=\"63056\">out-of-bounds read<\/a> or write. An attacker can exploit this flaw to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49220-pre-authentication-remote-code-execution-in-trend-micro-apex-central\/\"  data-wpil-monitor-id=\"62561\">execute arbitrary code<\/a> or access sensitive information, leading to system compromise or data leakage.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-3424708576\" 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>To <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49526-out-of-bounds-write-vulnerability-in-illustrator-leading-to-arbitrary-code-execution\/\"  data-wpil-monitor-id=\"75136\">illustrate how this vulnerability<\/a> might be exploited, consider the following conceptual pseudocode:<\/p>\n<pre><code class=\"\" data-line=\"\">#include &quot;rt-thread\/components\/lwp\/lwp_syscall.h&quot;\nint main() {\n\/\/ Create a malicious payload\nchar malicious_payload[512];\nmemset(malicious_payload, &#039;A&#039;, 512);\n\/\/ Call the vulnerable function with the malicious payload as the &#039;how&#039; argument\nsys_thread_sigprocmask(malicious_payload, NULL, NULL);\nreturn 0;\n}<\/code><\/pre>\n<p>In this example, a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-6165-buffer-overflow-vulnerability-in-totolink-x15\/\"  data-wpil-monitor-id=\"62360\">buffer overflow<\/a> is created by providing an oversized &#8216;how&#8217; argument to the sys_thread_sigprocmask function. This could potentially result in <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-1562-unauthorized-arbitrary-plugin-installation-in-funnelkit-plugin-for-wordpress\/\"  data-wpil-monitor-id=\"62462\">arbitrary code execution or unauthorized<\/a> access to sensitive data.<\/p>\n<p><strong>Mitigation<\/strong><\/p>\n<p>The recommended <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-39486-rankie-sql-injection-vulnerability-and-mitigation-measures\/\"  data-wpil-monitor-id=\"62396\">mitigation strategy for this vulnerability<\/a> is to apply the latest patch provided by the vendor. In situations where immediate patching is not feasible, utilizing a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as temporary mitigation. Organizations should also consider implementing secure coding practices to help <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49155-uncontrolled-search-path-vulnerability-in-trend-micro-apex-one-data-loss-prevention-module\/\"  data-wpil-monitor-id=\"62482\">prevent such vulnerabilities<\/a> in the future.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview A critical vulnerability, identified as CVE-2025-5868, has been detected in RT-Thread 5.1.0. Affecting the sys_thread_sigprocmask function in rt-thread\/components\/lwp\/lwp_syscall.c, this vulnerability poses a significant threat to systems running the aforementioned version of RT-Thread. With a CVSS Severity Score of 8.0, the vulnerability has the potential to lead to system compromise or data leakage, thus causing [&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":[],"product":[],"attack_vector":[86,80],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-56039","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-buffer-overflow","attack_vector-rce"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/56039","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=56039"}],"version-history":[{"count":9,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/56039\/revisions"}],"predecessor-version":[{"id":67745,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/56039\/revisions\/67745"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=56039"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=56039"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=56039"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=56039"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=56039"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=56039"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=56039"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=56039"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=56039"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}