{"id":53063,"date":"2025-06-17T15:23:39","date_gmt":"2025-06-17T15:23:39","guid":{"rendered":""},"modified":"2025-06-24T11:22:03","modified_gmt":"2025-06-24T17:22:03","slug":"cve-2025-5912-critical-stack-based-buffer-overflow-in-d-link-dir-632-fw103b08","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-5912-critical-stack-based-buffer-overflow-in-d-link-dir-632-fw103b08\/","title":{"rendered":"<strong>CVE-2025-5912: Critical Stack-Based Buffer Overflow in D-Link DIR-632 FW103B08<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>A critical vulnerability, designated as CVE-2025-5912, has been identified in D-Link DIR-632 FW103B08. This vulnerability carries significant weight as it affects the function do_file of the HTTP POST Request Handler component. The exploitation of this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-3365-path-traversal-vulnerability-leading-to-system-compromise\/\"  data-wpil-monitor-id=\"59462\">vulnerability could potentially lead to a system<\/a> compromise or data leakage, making it a matter of grave concern for the cybersecurity community. It is particularly alarming because the exploit is publicly disclosed and may be used, and it affects products no longer supported by the maintainer, which means they are unlikely to receive patches or updates.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-5912<br \/>\nSeverity: Critical (CVSS score 8.8)<br \/>\nAttack Vector: Network (Remote)<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-31222-potential-privilege-elevation-and-system-compromise-vulnerability\/\"  data-wpil-monitor-id=\"59673\">Potential system compromise<\/a> or data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-1822792081\" 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: 720px;\">\r\n  <h2 style=\"margin-top: 0; font-size: 22px; font-weight: 600; display: flex; align-items: center; letter-spacing: -0.02em;\">\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\" style=\"display: inline-flex; align-items: center; margin-right: 10px;\">\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: 42px; height: 42px;\" \/>\r\n    <\/a>\r\n    Share secrets securely\r\n  <\/h2>\r\n\r\n  <p style=\"margin-bottom: 14px; color: #d1d5db;\">\r\n    Ameeba is private infrastructure for communication and sensitive work built on encrypted identity instead of exposed corporate identity systems.\r\n  <\/p>\r\n\r\n  <p style=\"margin-bottom: 18px; color: #a1a1aa;\">\r\n    Passwords, credentials, confidential files, screenshots, internal discussions, sensitive AI context, and private coordination should not become exposed across ordinary communication platforms.\r\n  <\/p>\r\n\r\n  <ul style=\"list-style: none; padding-left: 0; margin-bottom: 24px; color: #e4e4e7;\">\r\n    <li style=\"margin-bottom: 8px;\">\u2022 Encrypted identity<\/li>\r\n    <li style=\"margin-bottom: 8px;\">\u2022 Private Spaces for organizations and teams<\/li>\r\n    <li style=\"margin-bottom: 8px;\">\u2022 End-to-end encrypted chat, calls, files, and notes<\/li>\r\n    <li style=\"margin-bottom: 8px;\">\u2022 Sensitive AI work and protected collaboration<\/li>\r\n    <li>\u2022 Built for information that cannot leak<\/li>\r\n  <\/ul>\r\n\r\n  <p style=\"font-style: italic; font-weight: 600; margin-bottom: 24px; color: #ffffff;\">\r\n    Our mission is to secure human work alongside AI.\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: 8px; font-weight: 500;\">\r\n      Download Ameeba\r\n    <\/a>\r\n\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\" style=\"border: 1px solid #ffffff; color: #ffffff; padding: 10px 20px; text-decoration: none; border-radius: 8px; font-weight: 500;\">\r\n      Learn More\r\n    <\/a>\r\n  <\/div>\r\n<\/div><\/div>\n<p>Product | Affected Versions<\/p>\n<p><a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5969-critical-stack-based-buffer-overflow-vulnerability-in-d-link-dir-632-fw103b08\/\"  data-wpil-monitor-id=\"61109\">D-Link DIR-632<\/a> FW103B08 | All versions<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-39358-critical-deserialization-of-untrusted-data-vulnerability-in-teastudio-pl-wp-posts-carousel\/\"  data-wpil-monitor-id=\"59897\">vulnerability lies in the function do_file within the HTTP POST<\/a> Request Handler of the D-Link DIR-632 router firmware. An attacker can remotely send a maliciously crafted HTTP POST request to this function, causing a stack-based <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5671-critical-buffer-overflow-vulnerability-in-totolink-n302r-plus-http-post-request-handler\/\"  data-wpil-monitor-id=\"59507\">buffer overflow<\/a>. This occurrence can lead to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-1329-local-user-arbitrary-code-execution-vulnerability-in-ibm-cics-tx\/\"  data-wpil-monitor-id=\"59409\">arbitrary code execution<\/a> on the device, resulting in a system compromise. Given that the exploit can be initiated remotely and without any user interaction, this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-47827-critical-security-vulnerability-in-igel-os-allows-secure-boot-bypass\/\"  data-wpil-monitor-id=\"59874\">vulnerability presents a significant security<\/a> risk.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-4138543220\" 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 is a conceptual example of an HTTP POST request that could <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-31259-vulnerability-in-macos-sequoia-allowing-for-potential-privilege-escalation\/\"  data-wpil-monitor-id=\"59736\">potentially exploit this vulnerability<\/a>:<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/do_file HTTP\/1.1\nHost: vulnerable.router.ip\nContent-Type: application\/octet-stream\n{ &quot;malicious_payload&quot;: &quot;OVERFLOWING_DATA&quot; }<\/code><\/pre>\n<p>In this example, the &#8220;malicious_payload&#8221; contains data that exceeds the buffer&#8217;s capacity, causing a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5672-critical-buffer-overflow-vulnerability-in-totolink-n302r-plus\/\"  data-wpil-monitor-id=\"59537\">buffer overflow<\/a>. The <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=\"60527\">overflowing data may contain malicious instructions that the system<\/a> executes unknowingly.<\/p>\n<p><strong>Mitigation<\/strong><\/p>\n<p>Given that the affected products are no longer supported by the maintainer, the primary course of <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49013-code-injection-vulnerability-in-wilderforge-projects-due-to-unsafe-github-actions-usage\/\"  data-wpil-monitor-id=\"60110\">action to mitigate this vulnerability<\/a> is to apply any available vendor patches. If no patches are available, it is recommended to use a Web Application Firewall (WAF) or Intrusion Detection System (IDS) as temporary mitigation. Users are also advised to replace the affected devices with those that are currently supported and receiving security updates.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview A critical vulnerability, designated as CVE-2025-5912, has been identified in D-Link DIR-632 FW103B08. This vulnerability carries significant weight as it affects the function do_file of the HTTP POST Request Handler component. The exploitation of this vulnerability could potentially lead to a system compromise or data leakage, making it a matter of grave concern for [&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-53063","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\/53063","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=53063"}],"version-history":[{"count":11,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/53063\/revisions"}],"predecessor-version":[{"id":54788,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/53063\/revisions\/54788"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=53063"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=53063"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=53063"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=53063"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=53063"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=53063"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=53063"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=53063"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=53063"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}