{"id":37635,"date":"2025-05-13T00:26:11","date_gmt":"2025-05-13T00:26:11","guid":{"rendered":""},"modified":"2025-05-30T11:18:08","modified_gmt":"2025-05-30T17:18:08","slug":"cve-2025-4342-critical-buffer-overflow-vulnerability-in-d-link-dir-600l","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-4342-critical-buffer-overflow-vulnerability-in-d-link-dir-600l\/","title":{"rendered":"<strong>CVE-2025-4342: Critical Buffer Overflow Vulnerability in D-Link DIR-600L<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>The cybersecurity industry has recently identified a critical vulnerability, CVE-2025-4342, affecting D-Link DIR-600L up to version 2.07B01. This vulnerability, classified as critical, has the potential to compromise systems and lead to data leakage, posing a significant security risk to users of these products.<br \/>\nEssentially, the vulnerability lies in the router&#8217;s function formEasySetupWizard3 and can be exploited remotely by manipulating the host argument to cause a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-4147-critical-remote-buffer-overflow-vulnerability-in-netgear-ex6200-1-0-3-94\/\"  data-wpil-monitor-id=\"42321\">buffer<\/a> overflow. As these products are no longer supported by the vendor, this discovery underlines the importance of maintaining updated and supported devices.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-4342<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-2023-49126-critical-vulnerability-in-solid-edge-se2023-allows-for-potential-system-compromise\/\"  data-wpil-monitor-id=\"43437\">Potential system<\/a> compromise and data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-853878520\" 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-2025-4349-critical-command-injection-vulnerability-in-d-link-dir-600l-routers\/\"  data-wpil-monitor-id=\"43870\">D-Link DIR-600L<\/a> | Up to 2.07B01<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The exploit takes advantage of an <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-4139-critical-buffer-overflow-vulnerability-in-netgear-ex6120-1-0-0-68\/\"  data-wpil-monitor-id=\"42404\">overflow buffer<\/a> in the formEasySetupWizard3 function of D-Link DIR-600L routers. By manipulating the host argument, an attacker can <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-4142-critical-buffer-overflow-vulnerability-in-netgear-ex6200-1-0-3-94\/\"  data-wpil-monitor-id=\"42425\">overflow the buffer<\/a>, leading to undefined behavior in the system. This could <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-36864-integer-overflow-vulnerability-in-gtkwave-3-3-115-with-potential-for-arbitrary-code-execution\/\"  data-wpil-monitor-id=\"42473\">potentially allow an attacker to execute arbitrary code<\/a>, enabling them to compromise the system and possibly leak sensitive data.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-2486366185\" 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 a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-24189-memory-corruption-vulnerability-due-to-maliciously-crafted-web-content-in-various-operating-systems\/\"  data-wpil-monitor-id=\"51775\">malicious payload might trigger the vulnerability<\/a>:<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/formEasySetupWizard3 HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/json\n{ &quot;host&quot;: &quot;A long string that causes buffer overflow...&quot; }<\/code><\/pre>\n<p>In this example, the &#8220;host&#8221; argument is filled with a longer string than the buffer can handle, causing an overflow. This could <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-4347-d-link-router-buffer-overflow-vulnerability-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"43569\">lead to undefined system<\/a> behavior, potentially opening doors for further exploits.<br \/>\nTo mitigate this vulnerability, users are advised to apply vendor patches. In cases where the product is no longer supported by the manufacturer, as is the case with D-Link DIR-600L, users can use a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) as a temporary mitigation strategy. However, the best course of action would be to upgrade to a supported product.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview The cybersecurity industry has recently identified a critical vulnerability, CVE-2025-4342, affecting D-Link DIR-600L up to version 2.07B01. This vulnerability, classified as critical, has the potential to compromise systems and lead to data leakage, posing a significant security risk to users of these products. Essentially, the vulnerability lies in the router&#8217;s function formEasySetupWizard3 and can [&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-37635","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\/37635","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=37635"}],"version-history":[{"count":8,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/37635\/revisions"}],"predecessor-version":[{"id":46336,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/37635\/revisions\/46336"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=37635"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=37635"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=37635"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=37635"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=37635"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=37635"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=37635"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=37635"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=37635"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}