{"id":36047,"date":"2025-05-07T12:33:34","date_gmt":"2025-05-07T12:33:34","guid":{"rendered":""},"modified":"2025-06-03T23:19:44","modified_gmt":"2025-06-04T05:19:44","slug":"cve-2025-4142-critical-buffer-overflow-vulnerability-in-netgear-ex6200-1-0-3-94","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-4142-critical-buffer-overflow-vulnerability-in-netgear-ex6200-1-0-3-94\/","title":{"rendered":"<strong>CVE-2025-4142: Critical Buffer Overflow Vulnerability in Netgear EX6200 1.0.3.94<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>A critical vulnerability has been discovered in Netgear EX6200 version 1.0.3.94 that has been assigned the CVE ID of CVE-2025-4142. This vulnerability is associated with the function sub_3C8EC of the software and can lead to a buffer overflow attack, potentially compromising the system and causing data leakage. As it can be initiated remotely, the risk is severe, and any organization using the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-7224-openvpn-connect-vulnerability-in-macos-versions-3-0-to-3-4-6\/\"  data-wpil-monitor-id=\"41189\">vulnerable version<\/a> of Netgear EX6200 is at risk. The vendor has been <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2022-3604-data-validation-vulnerability-in-contact-form-entries-wordpress-plugin\/\"  data-wpil-monitor-id=\"52178\">contacted about the vulnerability<\/a> but has yet to respond, making immediate mitigation a priority for all affected systems.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-4142<br \/>\nSeverity: Critical (CVSS 8.8)<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: None<br \/>\nImpact: System Compromise and <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-50612-escalation-of-privileges-and-data-leakage-in-fit2cloud-cloud-explorer-lite\/\"  data-wpil-monitor-id=\"41274\">Data Leakage<\/a><\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-3761690619\" 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-2025-4141-critical-buffer-overflow-vulnerability-in-netgear-ex6200-1-0-3-94\/\"  data-wpil-monitor-id=\"42307\">Netgear EX6200<\/a> | 1.0.3.94<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-43865-critical-spoofing-vulnerability-in-react-router-prior-to-version-7-5-2\/\"  data-wpil-monitor-id=\"41459\">vulnerability resides in the function sub_3C8EC of Netgear EX6200 version<\/a> 1.0.3.94. By manipulating the &#8216;host&#8217; argument in the function, an attacker can trigger a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-34325-buffer-overflow-vulnerability-in-libfsimage\/\"  data-wpil-monitor-id=\"41019\">buffer overflow<\/a>. This can lead to arbitrary <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-45947-arbitrarily-executable-code-vulnerability-in-online-banquet-booking-system-v1-2\/\"  data-wpil-monitor-id=\"40835\">code execution<\/a>, allowing the attacker to compromise the system. Furthermore, since the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-3200-unauthenticated-remote-attacker-exploiting-insecure-tls-protocols\/\"  data-wpil-monitor-id=\"40836\">attack can be launched remotely<\/a>, the attacker does not need physical access to the target system, making it a highly severe vulnerability.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-1660279681\" 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>The following is a conceptual example of how this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-47154-exploitation-of-use-after-free-vulnerability-in-libjs-in-ladybird\/\"  data-wpil-monitor-id=\"52180\">vulnerability might be exploited<\/a>. This is not an actual exploit code but a hypothetical example to demonstrate the concept of the attack.<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/sub_3C8EC\/function HTTP\/1.1\nHost: vulnerable_netgear_ex6200\nContent-Type: application\/json\n{ &quot;host&quot;: &quot;AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA...&quot; }<\/code><\/pre>\n<p>In this example, the &#8216;host&#8217; argument is filled with an excessively long string (represented by &#8216;A&#8217;s), causing a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-3785-critical-buffer-overflow-vulnerability-in-d-link-dwr-m961\/\"  data-wpil-monitor-id=\"40995\">buffer overflow in the vulnerable<\/a> function.<\/p>\n<p><strong>Mitigation<\/strong><\/p>\n<p>Currently, the vendor has not <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-47884-jenkins-openid-connect-provider-plugin-vulnerability-leading-to-unauthorized-access\/\"  data-wpil-monitor-id=\"52179\">provided a patch for this vulnerability<\/a>. Therefore, it is recommended to implement a Web Application Firewall (WAF) or Intrusion Detection System (IDS) as a temporary mitigation measure. These measures can help detect and block exploit attempts. However, they do not eliminate the vulnerability, so it&#8217;s crucial to apply the vendor&#8217;s patch as soon as it becomes available. Furthermore, consider implementing a defense-in-depth strategy to reduce the overall <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-46490-puzzling-vulnerability-in-crossword-compiler-puzzles-risks-system-compromise\/\"  data-wpil-monitor-id=\"54598\">risk to your systems<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview A critical vulnerability has been discovered in Netgear EX6200 version 1.0.3.94 that has been assigned the CVE ID of CVE-2025-4142. This vulnerability is associated with the function sub_3C8EC of the software and can lead to a buffer overflow attack, potentially compromising the system and causing data leakage. As it can be initiated remotely, the [&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":[86,80],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-36047","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-buffer-overflow","attack_vector-rce"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/36047","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=36047"}],"version-history":[{"count":9,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/36047\/revisions"}],"predecessor-version":[{"id":48763,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/36047\/revisions\/48763"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=36047"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=36047"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=36047"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=36047"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=36047"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=36047"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=36047"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=36047"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=36047"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}