{"id":33854,"date":"2025-04-29T20:01:06","date_gmt":"2025-04-29T20:01:06","guid":{"rendered":""},"modified":"2025-09-11T20:15:53","modified_gmt":"2025-09-12T02:15:53","slug":"cve-2025-3785-critical-buffer-overflow-vulnerability-in-d-link-dwr-m961","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-3785-critical-buffer-overflow-vulnerability-in-d-link-dwr-m961\/","title":{"rendered":"<strong>CVE-2025-3785: Critical Buffer Overflow Vulnerability in D-Link DWR-M961<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>In today&#8217;s digital era, the security of our routers and network devices is as important as the security of our personal computers. A recently discovered vulnerability, CVE-2025-3785, in D-Link&#8217;s DWR-M961 router software has highlighted this issue. This vulnerability, identified as a critical stack-based <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-28024-buffer-overflow-vulnerability-in-totolink-a810r-v4-1-2cu-5182-b20201026\/\"  data-wpil-monitor-id=\"39575\">buffer overflow<\/a>, has a severe impact on the security and integrity of D-Link routers, specifically version 1.1.36. The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-32843-sql-injection-vulnerability-in-telecontrol-server-basic-leading-to-authorization-bypass-and-data-manipulation\/\"  data-wpil-monitor-id=\"39063\">vulnerability can lead to potential system compromise or data<\/a> leakage, posing a great risk to both individual users and businesses alike.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-3785<br \/>\nSeverity: Critical, CVSS Score of 8.8<br \/>\nAttack Vector: Remote<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: Not required<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-32849-vulnerability-in-telecontrol-server-basic-leads-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"39577\">Potential system<\/a> compromise or data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-2238870130\" 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>D-Link DWR-M961 | up to version 1.1.36<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-43958-arbitrary-file-upload-vulnerability-in-hospital-management-system-v4-0\/\"  data-wpil-monitor-id=\"39871\">vulnerability resides in the unknown code of the file<\/a> \/boafrm\/formStaticDHCP of the component Authorization Interface. An attacker can exploit this vulnerability by manipulating the Hostname argument, leading to a stack-based <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-3619-critical-heap-buffer-overflow-vulnerability-in-google-chrome-codecs\/\"  data-wpil-monitor-id=\"40063\">buffer overflow<\/a>. The attack can be initiated remotely without the need for <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-43922-unprivileged-local-user-privilege-escalation-vulnerability-in-filewave-windows-client\/\"  data-wpil-monitor-id=\"41429\">user interaction or special privileges<\/a>. Once the buffer overflow occurs, the attacker can <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-40446-arbitrary-code-execution-vulnerability-in-forkosh-mime-tex\/\"  data-wpil-monitor-id=\"39870\">execute arbitrary code<\/a>, potentially compromising the system or leaking sensitive data.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-383453470\" 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 <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-23394-critical-unix-symbolic-link-following-vulnerability-in-opensuse-tumbleweed-cyrus-imapd\/\"  data-wpil-monitor-id=\"54410\">following is a conceptual example of how this vulnerability<\/a> might be exploited. In this example, a malicious HTTP request is sent to the vulnerable router, manipulating the Hostname argument to trigger the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-3786-critical-buffer-overflow-vulnerability-in-tenda-ac15\/\"  data-wpil-monitor-id=\"40286\">buffer overflow<\/a>.<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/boafrm\/formStaticDHCP HTTP\/1.1\nHost: vulnerable-router.com\nContent-Type: application\/json\n{ &quot;Hostname&quot;: &quot;A&quot;.repeat(5000) } \/\/ Oversized Hostname argument to trigger buffer overflow<\/code><\/pre>\n<p><strong>Recommendations and Mitigation Measures<\/strong><\/p>\n<p>The safest and most effective way to address this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-43245-critical-downgrade-issue-affecting-multiple-macos-versions\/\"  data-wpil-monitor-id=\"81795\">issue is to upgrade the affected<\/a> component to version 1.1.49, which has been patched by the vendor to fix this vulnerability. If upgrading is not immediately feasible, using a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) can serve as temporary mitigation. As always, maintaining a robust and updated <a href=\"https:\/\/www.ameeba.com\/blog\/uh-cybersecurity-camps-a-crucial-step-towards-securing-our-digital-future\/\"  data-wpil-monitor-id=\"39576\">security system is crucial<\/a> in protecting against such vulnerabilities.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview In today&#8217;s digital era, the security of our routers and network devices is as important as the security of our personal computers. A recently discovered vulnerability, CVE-2025-3785, in D-Link&#8217;s DWR-M961 router software has highlighted this issue. This vulnerability, identified as a critical stack-based buffer overflow, has a severe impact on the security and integrity [&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-33854","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\/33854","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=33854"}],"version-history":[{"count":8,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/33854\/revisions"}],"predecessor-version":[{"id":74256,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/33854\/revisions\/74256"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=33854"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=33854"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=33854"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=33854"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=33854"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=33854"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=33854"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=33854"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=33854"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}