{"id":53897,"date":"2025-06-21T06:05:47","date_gmt":"2025-06-21T06:05:47","guid":{"rendered":""},"modified":"2025-09-07T11:38:00","modified_gmt":"2025-09-07T17:38:00","slug":"cve-2025-6137-critical-vulnerability-in-totolink-t10-leading-to-buffer-overflow","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-6137-critical-vulnerability-in-totolink-t10-leading-to-buffer-overflow\/","title":{"rendered":"<strong>CVE-2025-6137: Critical Vulnerability in TOTOLINK T10 Leading to Buffer Overflow<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>CVE-2025-6137 is a critical vulnerability found in TOTOLINK T10 version 4.1.8cu.5207. This vulnerability affects the function setWiFiScheduleCfg of the file \/cgi-bin\/cstecgi.cgi of the component HTTP POST Request Handler. It allows an attacker to trigger a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5849-critical-buffer-overflow-vulnerability-in-tenda-ac15\/\"  data-wpil-monitor-id=\"60193\">buffer overflow<\/a> through the manipulation of the &#8216;desc&#8217; argument. Since the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5850-critical-remote-buffer-overflow-vulnerability-in-tenda-ac15\/\"  data-wpil-monitor-id=\"60197\">vulnerability is exploitable remotely<\/a> and has been made public, it poses a significant threat to any system running the affected software. This <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-31424-sql-injection-vulnerability-in-wp-lead-capturing-pages-plugin\/\"  data-wpil-monitor-id=\"60221\">vulnerability matters because it could potentially lead<\/a> to a system compromise or data leakage.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-6137<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-2025-40912-critical-vulnerability-in-cryptx-for-perl-allows-potential-system-compromise\/\"  data-wpil-monitor-id=\"60789\">Potential system<\/a> compromise or data leak<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-312200030\" 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-2025-5901-buffer-overflow-vulnerability-in-totolink-t10-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"60486\">TOTOLINK T10<\/a> | 4.1.8cu.5207<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-32291-critical-file-upload-vulnerability-in-fantasticplugins-sumo-affiliates-pro\/\"  data-wpil-monitor-id=\"60206\">vulnerability lies in the setWiFiScheduleCfg function of the \/cgi-bin\/cstecgi.cgi file<\/a>. This function fails to properly sanitize the &#8216;desc&#8217; argument in HTTP POST requests, leading to a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5839-critical-buffer-overflow-vulnerability-in-tenda-ac9-15-03-02-13\/\"  data-wpil-monitor-id=\"60200\">buffer overflow<\/a>. An attacker can exploit this by sending a specially crafted <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=\"62260\">HTTP POST request<\/a> that contains an excessively long &#8216;desc&#8217; argument. This causes the system to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5905-critical-buffer-overflow-vulnerability-in-totolink-t10\/\"  data-wpil-monitor-id=\"60554\">overflow its buffer<\/a>, allowing the attacker to execute arbitrary code or disrupt the system&#8217;s normal operations.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-1926167312\" 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:<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/cgi-bin\/cstecgi.cgi HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/x-www-form-urlencoded\ndesc=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA... (continue until buffer overflow is triggered)<\/code><\/pre>\n<p>In this example, the &#8216;desc&#8217; argument in the POST request is filled with an excessively long string, which results in a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5902-critical-buffer-overflow-vulnerability-in-totolink-t10\/\"  data-wpil-monitor-id=\"60565\">buffer overflow<\/a> on the target system.<\/p>\n<p><strong>Recommended Mitigation<\/strong><\/p>\n<p>It&#8217;s recommended to apply the vendor-supplied 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=\"79937\">mitigate this vulnerability<\/a>. In the meantime, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can offer temporary protection against <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-7457-macos-authorization-model-exploit-leading-to-potential-mitm-attacks\/\"  data-wpil-monitor-id=\"79935\">potential exploits<\/a>. These <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-43192-critical-configuration-issue-in-macos-allowing-potential-system-compromise\/\"  data-wpil-monitor-id=\"79936\">systems can be configured<\/a> to block or alert on HTTP POST requests to \/cgi-bin\/cstecgi.cgi that contain unusually long &#8216;desc&#8217; arguments.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview CVE-2025-6137 is a critical vulnerability found in TOTOLINK T10 version 4.1.8cu.5207. This vulnerability affects the function setWiFiScheduleCfg of the file \/cgi-bin\/cstecgi.cgi of the component HTTP POST Request Handler. It allows an attacker to trigger a buffer overflow through the manipulation of the &#8216;desc&#8217; argument. Since the vulnerability is exploitable remotely and has been made [&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-53897","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\/53897","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=53897"}],"version-history":[{"count":11,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/53897\/revisions"}],"predecessor-version":[{"id":72369,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/53897\/revisions\/72369"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=53897"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=53897"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=53897"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=53897"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=53897"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=53897"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=53897"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=53897"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=53897"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}