{"id":54340,"date":"2025-06-23T07:24:15","date_gmt":"2025-06-23T07:24:15","guid":{"rendered":""},"modified":"2025-10-04T00:32:23","modified_gmt":"2025-10-04T06:32:23","slug":"cve-2025-6163-critical-buffer-overflow-vulnerability-in-totolink-a3002ru","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-6163-critical-buffer-overflow-vulnerability-in-totolink-a3002ru\/","title":{"rendered":"<strong>CVE-2025-6163: Critical Buffer Overflow Vulnerability in TOTOLINK A3002RU<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>A critical vulnerability has been identified in the TOTOLINK A3002RU wireless router version 3.0.0-B20230809.1615. This vulnerability, designated as CVE-2025-6163, enables attackers to manipulate a specific argument in HTTP POST requests, leading to buffer overflow. This issue poses a significant threat as it may be exploited remotely, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-40912-critical-vulnerability-in-cryptx-for-perl-allows-potential-system-compromise\/\"  data-wpil-monitor-id=\"60770\">potentially compromising systems<\/a> or leading to data leakage.<br \/>\nThe importance of mitigating this vulnerability cannot be overstated, given its <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5908-critical-vulnerability-in-totolink-ex1200t-leads-to-buffer-overflow\/\"  data-wpil-monitor-id=\"60649\">critical rating and the widespread use of TOTOLINK<\/a> routers. The exploit has already been disclosed to the public, increasing the urgency to implement preventative measures.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-6163<br \/>\nSeverity: Critical, CVSS v3.1 score: 8.8<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5978-critical-vulnerability-in-tenda-fh1202-1-2-0-14-potentially-leading-to-system-compromise\/\"  data-wpil-monitor-id=\"61014\">Potential system<\/a> compromise or data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-3098316306\" 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>TOTOLINK A3002RU | 3.0.0-B20230809.1615<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-6001-cross-site-request-forgery-vulnerability-in-virtuemart-product-image-upload-function\/\"  data-wpil-monitor-id=\"62185\">vulnerability lies within the HTTP POST Request<\/a> Handler, specifically in the file \/boafrm\/formMultiAP. An attacker can manipulate the &#8216;submit-url&#8217; argument in a HTTP POST request, causing a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5909-critical-buffer-overflow-vulnerability-in-totolink-ex1200t\/\"  data-wpil-monitor-id=\"60653\">buffer overflow<\/a>. <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5907-critical-buffer-overflow-vulnerability-in-totolink-ex1200t\/\"  data-wpil-monitor-id=\"60658\">Buffer overflow<\/a> occurs when data written to a buffer exceeds its capacity, causing it to overwrite adjacent memory. This consequence can lead to erratic program behavior, system crashes, or the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-47163-unauthorized-code-execution-through-microsoft-sharepoint-deserialization-vulnerability\/\"  data-wpil-monitor-id=\"60978\">execution of malicious code<\/a>.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-3505517608\" 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 example of how the <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=\"62247\">vulnerability might be exploited in an HTTP request<\/a>:<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/boafrm\/formMultiAP HTTP\/1.1\nHost: target.totolink.net\nContent-Type: application\/x-www-form-urlencoded\nsubmit-url=[MALICIOUS_PAYLOAD]<\/code><\/pre>\n<p>In this hypothetical example, [MALICIOUS_PAYLOAD] would be replaced with an exploit designed to cause a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5910-critical-buffer-overflow-vulnerability-in-totolink-ex1200t\/\"  data-wpil-monitor-id=\"60662\">buffer overflow<\/a>.<\/p>\n<p><strong>Mitigation and Prevention<\/strong><\/p>\n<p>There are two recommended <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-39486-rankie-sql-injection-vulnerability-and-mitigation-measures\/\"  data-wpil-monitor-id=\"63018\">mitigations for this vulnerability<\/a>. The first, and most effective, is to apply the vendor patch once available. If a patch is not immediately available or there are constraints in applying it, implementing a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can provide temporary mitigation.<br \/>\nIt&#8217;s also recommended to disable <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-6302-critical-remote-stack-based-buffer-overflow-vulnerability-in-totolink-ex1200t\/\"  data-wpil-monitor-id=\"63017\">remote management of the TOTOLINK<\/a> A3002RU router if not necessary, as the exploit can be launched remotely.<br \/>\nAs always, users are encouraged to monitor their <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-25180-underprivileged-software-manipulates-gpu-system-calls-for-unauthorized-access\/\"  data-wpil-monitor-id=\"88772\">systems for any unusual activity and ensure that all software<\/a> is kept up-to-date.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview A critical vulnerability has been identified in the TOTOLINK A3002RU wireless router version 3.0.0-B20230809.1615. This vulnerability, designated as CVE-2025-6163, enables attackers to manipulate a specific argument in HTTP POST requests, leading to buffer overflow. This issue poses a significant threat as it may be exploited remotely, potentially compromising systems or leading to data leakage. [&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-54340","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\/54340","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=54340"}],"version-history":[{"count":11,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/54340\/revisions"}],"predecessor-version":[{"id":81582,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/54340\/revisions\/81582"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=54340"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=54340"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=54340"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=54340"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=54340"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=54340"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=54340"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=54340"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=54340"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}