{"id":55773,"date":"2025-06-28T12:22:41","date_gmt":"2025-06-28T12:22:41","guid":{"rendered":""},"modified":"2025-09-16T07:08:57","modified_gmt":"2025-09-16T13:08:57","slug":"cve-2025-6486-remote-buffer-overflow-vulnerability-in-totolink-a3002r","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-6486-remote-buffer-overflow-vulnerability-in-totolink-a3002r\/","title":{"rendered":"<strong>CVE-2025-6486: Remote Buffer Overflow Vulnerability in TOTOLINK A3002R<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>Widely used in both homes and businesses, TOTOLINK A3002R routers have become a critical part of the digital infrastructure. However, a recently discovered vulnerability, designated as CVE-2025-6486, has cast a shadow over their security. This flaw is deemed <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49281-critical-php-remote-file-inclusion-vulnerability-in-unfoldwp-magways\/\"  data-wpil-monitor-id=\"62209\">critical due to its potential for remote<\/a> exploitation, with the attacker requiring no privileges or user interaction to compromise the system. This vulnerability, if left unaddressed, could lead to severe consequences, including <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-42966-sap-netweaver-xml-data-archiving-service-java-deserialization-vulnerability\/\"  data-wpil-monitor-id=\"80621\">data breaches and severe disruptions to services<\/a>.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-6486<br \/>\nSeverity: Critical (CVSS 8.8)<br \/>\nAttack Vector: Remote<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=\"62438\">Potential system<\/a> compromise or data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-1611587983\" 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 A3002R | 1.1.1-B20200824.0128<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49276-php-remote-file-inclusion-vulnerability-in-unfoldwp-blogmine\/\"  data-wpil-monitor-id=\"62104\">vulnerability lies in the function formWlanMultipleAP of the file<\/a> \/boafrm\/formWlanMultipleAP in TOTOLINK A3002R version 1.1.1-B20200824.0128. It arises from improper handling of the &#8216;submit-url&#8217; argument, leading to a stack-based <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-6151-critical-remote-buffer-overflow-vulnerability-in-tp-link-tl-wr940n\/\"  data-wpil-monitor-id=\"62107\">buffer overflow<\/a>. This allows an attacker 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=\"62544\">remotely execute arbitrary code<\/a> on the target system without the need for any user interaction or privileges, leading to potential system compromise or data leakage.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-3818437932\" 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 vulnerability might be exploited. The attacker sends a specially crafted HTTP POST <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=\"62151\">request to the vulnerable<\/a> endpoint, with a malicious payload in the &#8216;submit-url&#8217; argument.<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/boafrm\/formWlanMultipleAP HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/x-www-form-urlencoded\nsubmit-url=&lt;malicious_payload&gt;<\/code><\/pre>\n<p>In this scenario, &#8220; is a carefully designed string that, when processed by the vulnerable function, triggers a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-6144-critical-buffer-overflow-vulnerability-in-totolink-ex1200t\/\"  data-wpil-monitor-id=\"62121\">buffer overflow<\/a>, allowing the attacker to execute arbitrary code on the target system.<br \/>\nPlease note that this is a simplified example for illustrative purposes and may not <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-50849-critical-insecure-direct-object-reference-idor-vulnerability-in-cs-cart-4-18-3\/\"  data-wpil-monitor-id=\"76565\">directly apply to the actual exploitation of this vulnerability<\/a>. The actual exploit may require intricate knowledge of the target <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2022-43110-critical-unauthenticated-remote-system-configuration-vulnerability-in-voltronic-power-viewpower-powershield-netguard\/\"  data-wpil-monitor-id=\"83120\">system&#8217;s configuration<\/a>, memory layout, and other factors that are beyond the scope of this article.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview Widely used in both homes and businesses, TOTOLINK A3002R routers have become a critical part of the digital infrastructure. However, a recently discovered vulnerability, designated as CVE-2025-6486, has cast a shadow over their security. This flaw is deemed critical due to its potential for remote exploitation, with the attacker requiring no privileges or user [&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-55773","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\/55773","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=55773"}],"version-history":[{"count":10,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/55773\/revisions"}],"predecessor-version":[{"id":75659,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/55773\/revisions\/75659"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=55773"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=55773"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=55773"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=55773"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=55773"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=55773"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=55773"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=55773"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=55773"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}