{"id":54015,"date":"2025-06-22T12:16:15","date_gmt":"2025-06-22T12:16:15","guid":{"rendered":""},"modified":"2025-09-10T18:12:43","modified_gmt":"2025-09-11T00:12:43","slug":"cve-2025-6143-critical-buffer-overflow-vulnerability-in-totolink-ex1200t","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-6143-critical-buffer-overflow-vulnerability-in-totolink-ex1200t\/","title":{"rendered":"<strong>CVE-2025-6143: Critical Buffer Overflow Vulnerability in TOTOLINK EX1200T<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>A critical security vulnerability, identified as CVE-2025-6143, has been discovered in TOTOLINK EX1200T version 4.1.2cu.5232_B20210713. This vulnerability poses a significant risk to any organization that uses the affected device since it could potentially lead to system compromise or data leakage. The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-4387-arbitrary-file-upload-vulnerability-in-abandoned-cart-pro-for-woocommerce-plugin\/\"  data-wpil-monitor-id=\"60632\">vulnerability affects an unknown function of the file<\/a> \/boafrm\/formNtp of the HTTP POST Request Handler component and can be exploited remotely.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-6143<br \/>\nSeverity: Critical (8.8 CVSS score)<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-40912-critical-vulnerability-in-cryptx-for-perl-allows-potential-system-compromise\/\"  data-wpil-monitor-id=\"60782\">Potential system<\/a> compromise or data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-3467653877\" 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-2025-5908-critical-vulnerability-in-totolink-ex1200t-leads-to-buffer-overflow\/\"  data-wpil-monitor-id=\"60645\">TOTOLINK EX1200T<\/a> | 4.1.2cu.5232_B20210713<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The vulnerability stems from the manipulation of the &#8216;submit-url&#8217; argument which leads to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5901-buffer-overflow-vulnerability-in-totolink-t10-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"60497\">buffer<\/a> overflow. An attacker can send 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=\"62191\">request to the vulnerable<\/a> component. When this request is processed, the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5905-critical-buffer-overflow-vulnerability-in-totolink-t10\/\"  data-wpil-monitor-id=\"60550\">buffer overflow<\/a> can occur. This could enable an attacker to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-47163-unauthorized-code-execution-through-microsoft-sharepoint-deserialization-vulnerability\/\"  data-wpil-monitor-id=\"60985\">execute arbitrary code<\/a> on the system or cause the system to crash, resulting in a denial of service.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-388998247\" 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. This example represents a malicious <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=\"62242\">HTTP POST request targeting the vulnerable<\/a> endpoint.<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/boafrm\/formNtp HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/x-www-form-urlencoded\nsubmit-url=malicious_payload<\/code><\/pre>\n<p>In this example, &#8216;malicious_payload&#8217; is a placeholder for the actual malicious code or data that would cause the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5902-critical-buffer-overflow-vulnerability-in-totolink-t10\/\"  data-wpil-monitor-id=\"60560\">buffer overflow<\/a>.<br \/>\nRemember, this is a conceptual example only and may not represent the exact <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-21120-trusting-http-permission-methods-on-the-server-side-vulnerability-in-dell-avamar\/\"  data-wpil-monitor-id=\"81504\">method used to exploit this vulnerability<\/a> in real-world scenarios.<\/p>\n<p><strong>Mitigation<\/strong><\/p>\n<p>Users of the affected <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5485-a-critical-vulnerability-pertaining-to-user-name-enumeration-in-web-management-interfaces\/\"  data-wpil-monitor-id=\"61507\">TOTOLINK<\/a> EX1200T version are urged to apply the latest vendor patch as soon as possible to fix this vulnerability. In the interim, as a temporary mitigation, users can deploy a Web Application Firewall (WAF) or Intrusion Detection System (IDS) to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-45984-critical-command-injection-vulnerability-detected-in-blink-routers\/\"  data-wpil-monitor-id=\"61361\">detect and prevent attempts to exploit this vulnerability<\/a>. However, this should not be considered a long-term solution and should only be used until the vendor patch can be applied.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview A critical security vulnerability, identified as CVE-2025-6143, has been discovered in TOTOLINK EX1200T version 4.1.2cu.5232_B20210713. This vulnerability poses a significant risk to any organization that uses the affected device since it could potentially lead to system compromise or data leakage. The vulnerability affects an unknown function of the file \/boafrm\/formNtp of the HTTP POST [&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":[86,87],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-54015","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-buffer-overflow","attack_vector-dos"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/54015","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=54015"}],"version-history":[{"count":12,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/54015\/revisions"}],"predecessor-version":[{"id":73956,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/54015\/revisions\/73956"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=54015"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=54015"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=54015"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=54015"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=54015"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=54015"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=54015"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=54015"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=54015"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}