{"id":55719,"date":"2025-06-28T07:20:51","date_gmt":"2025-06-28T07:20:51","guid":{"rendered":""},"modified":"2025-10-15T16:37:18","modified_gmt":"2025-10-15T22:37:18","slug":"cve-2025-6399-critical-buffer-overflow-vulnerability-in-totolink-x15","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-6399-critical-buffer-overflow-vulnerability-in-totolink-x15\/","title":{"rendered":"<strong>CVE-2025-6399: Critical Buffer Overflow Vulnerability in TOTOLINK X15<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>A critical vulnerability has been discovered in the TOTOLINK X15 1.0.0-B20230714.1105 router, which, if exploited, could lead to system compromise and potential data leakage. The vulnerability resides in an unknown function of the file \/boafrm\/formIPv6Addr, which is a part of the HTTP POST Request Handler component. Due to the lack of proper input validation, a malicious actor can manipulate the argument &#8216;submit-url&#8217; leading to a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-6151-critical-remote-buffer-overflow-vulnerability-in-tp-link-tl-wr940n\/\"  data-wpil-monitor-id=\"62110\">buffer overflow<\/a> condition. Given the high <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49282-high-severity-remote-file-inclusion-vulnerability-in-unfoldwp-magze\/\"  data-wpil-monitor-id=\"62305\">severity of this vulnerability<\/a>, it is crucial for system administrators and users of the affected device to understand the threat and take the necessary mitigation steps.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-6399<br \/>\nSeverity: Critical (CVSS: 8.8)<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=\"62445\">Potential system<\/a> compromise or data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-1008389888\" 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><a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-8243-critical-buffer-overflow-vulnerability-in-totolink-x15-http-post-request-handler\/\"  data-wpil-monitor-id=\"66773\">TOTOLINK X15<\/a> | 1.0.0-B20230714.1105<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-24919-deserialization-of-untrusted-input-vulnerability-in-dell-controlvault3\/\"  data-wpil-monitor-id=\"63456\">vulnerability exists due to inadequate input<\/a> validation in the HTTP POST Request Handler component&#8217;s \/boafrm\/formIPv6Addr file. When a specially crafted POST request is sent with a manipulated &#8216;submit-url&#8217; argument, it can cause a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-6144-critical-buffer-overflow-vulnerability-in-totolink-ex1200t\/\"  data-wpil-monitor-id=\"62119\">buffer overflow<\/a> condition. This buffer overflow can potentially allow the attacker to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49091-remote-code-execution-due-to-kde-konsole-url-scheme-handler-vulnerability\/\"  data-wpil-monitor-id=\"62066\">execute arbitrary code<\/a>, leading to full system compromise or data leakage. The exploit can be triggered <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-34509-hardcoded-user-account-in-sitecore-xm-and-xp-enabling-unauthenticated-remote-access\/\"  data-wpil-monitor-id=\"62781\">remotely and does not require any user<\/a> interaction or privileges.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-3173366938\" 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>Here&#8217;s a conceptual example of how the vulnerability might be exploited. This is a sample <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-6162-critical-buffer-overflow-vulnerability-in-totolink-ex1200t-http-post-request-handler\/\"  data-wpil-monitor-id=\"62245\">HTTP POST request<\/a>:<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/boafrm\/formIPv6Addr HTTP\/1.1\nHost: vulnerable.totolink.com\nContent-Type: application\/x-www-form-urlencoded\nsubmit-url=&lt;malicious_payload&gt;<\/code><\/pre>\n<p>In this request, &#8220; is the manipulated variable that triggers the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-6145-critical-buffer-overflow-vulnerability-in-totolink-ex1200t\/\"  data-wpil-monitor-id=\"62125\">buffer overflow<\/a> condition. This payload could consist of a specially crafted string that exceeds the buffer limit, possibly containing malicious <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49220-pre-authentication-remote-code-execution-in-trend-micro-apex-central\/\"  data-wpil-monitor-id=\"62568\">code intended to be executed<\/a> upon successful exploitation.<\/p>\n<p><strong>Mitigation<\/strong><\/p>\n<p>Users of the affected TOTOLINK X15 router are strongly advised to apply the vendor-provided patch as soon as possible to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-39486-rankie-sql-injection-vulnerability-and-mitigation-measures\/\"  data-wpil-monitor-id=\"62446\">mitigate this vulnerability<\/a>. If the patch cannot be applied immediately, users should consider deploying a Web Application Firewall (WAF) or Intrusion Detection System (IDS) as a temporary measure to detect and <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-8059-critical-privilege-escalation-vulnerability-in-b-blocks-wordpress-plugin\/\"  data-wpil-monitor-id=\"76421\">block attempts to exploit this vulnerability<\/a>. Always ensure to follow good security practices, such as regularly updating <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-12913-sql-injection-vulnerability-in-megatek-communication-system-azora-wireless-network-management\/\"  data-wpil-monitor-id=\"89994\">systems and monitoring network<\/a> traffic for suspicious activities.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview A critical vulnerability has been discovered in the TOTOLINK X15 1.0.0-B20230714.1105 router, which, if exploited, could lead to system compromise and potential data leakage. The vulnerability resides in an unknown function of the file \/boafrm\/formIPv6Addr, which is a part of the HTTP POST Request Handler component. Due to the lack of proper input validation, [&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],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-55719","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-buffer-overflow"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/55719","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=55719"}],"version-history":[{"count":13,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/55719\/revisions"}],"predecessor-version":[{"id":82871,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/55719\/revisions\/82871"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=55719"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=55719"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=55719"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=55719"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=55719"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=55719"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=55719"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=55719"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=55719"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}