{"id":59633,"date":"2025-07-25T12:12:33","date_gmt":"2025-07-25T12:12:33","guid":{"rendered":""},"modified":"2025-08-31T06:32:13","modified_gmt":"2025-08-31T12:32:13","slug":"cve-2025-7807-critical-buffer-overflow-vulnerability-in-tenda-fh451-1-0-0-9-router","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-7807-critical-buffer-overflow-vulnerability-in-tenda-fh451-1-0-0-9-router\/","title":{"rendered":"<strong>CVE-2025-7807: Critical Buffer Overflow Vulnerability in Tenda FH451 1.0.0.9 Router<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>This post brings to light a highly critical vulnerability found in the Tenda FH451 1.0.0.9 router. Identified as CVE-2025-7807, this security flaw poses a significant risk to all users of the affected router. An attacker can exploit this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49416-critical-php-remote-file-inclusion-vulnerability-in-fastw3b-llc-fw-gallery\/\"  data-wpil-monitor-id=\"66105\">vulnerability remotely<\/a> to trigger a stack-based buffer overflow that can potentially compromise the entire system or lead to data leakage.<br \/>\nConsidering the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-47998-severe-heap-based-buffer-overflow-vulnerability-in-windows-routing-and-remote-access-service\/\"  data-wpil-monitor-id=\"67332\">severity of the impact and the fact that the vulnerability<\/a> details are now public, it is absolutely crucial for users and administrators to take immediate steps to mitigate this risk. A failure to do so could result in severe consequences, including <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5835-droip-plugin-for-wordpress-unauthorized-access-and-modification-vulnerability\/\"  data-wpil-monitor-id=\"70731\">unauthorized system access<\/a>, data breaches, and potential disruption of network services.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-7807<br \/>\nSeverity: Critical, with a CVSS score of 8.8<br \/>\nAttack Vector: Remote<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-46334-critical-vulnerability-in-git-gui-enables-potential-system-compromise\/\"  data-wpil-monitor-id=\"70730\">Potential system<\/a> compromise and data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-564842067\" 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-2025-7805-critical-vulnerability-in-tenda-fh451-1-0-0-9-leading-to-remote-buffer-overflow-attacks\/\"  data-wpil-monitor-id=\"67622\">Tenda FH451<\/a> | 1.0.0.9<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49886-critical-php-local-file-inclusion-vulnerability-in-webgeniuslab-zikzag-core\/\"  data-wpil-monitor-id=\"66123\">vulnerability resides in the fromSafeUrlFilter function of the \/goform\/SafeUrlFilter file<\/a> in the Tenda FH451 1.0.0.9 router. The improper handling of the Go\/page argument within this function can lead to a stack-based <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-7596-critical-remote-buffer-overflow-vulnerability-in-tenda-fh1205\/\"  data-wpil-monitor-id=\"66403\">buffer overflow<\/a>.<br \/>\nA <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-8243-critical-buffer-overflow-vulnerability-in-totolink-x15-http-post-request-handler\/\"  data-wpil-monitor-id=\"66797\">buffer overflow<\/a> occurs when more data is put into a buffer than it can handle, causing the extra data to overflow into adjacent memory locations. In this case, an attacker can craft and send a specially formatted request to the vulnerable function, causing a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-7597-critical-stack-based-buffer-overflow-vulnerability-in-tenda-ax1803-1-0-0-1\/\"  data-wpil-monitor-id=\"66942\">buffer overflow<\/a>. This can allow the execution of <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-25214-race-condition-vulnerability-in-wwbn-avideo-14-4-leading-to-arbitrary-code-execution\/\"  data-wpil-monitor-id=\"67624\">arbitrary code<\/a>, leading to potential system compromise or data leakage.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-2932263965\" 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 conceptual <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-54451-code-injection-vulnerability-in-samsung-electronics-magicinfo-9-server\/\"  data-wpil-monitor-id=\"67623\">code illustrates how an attacker might exploit this vulnerability<\/a>. Note that this is a simplified example and real-world exploits might be more complex and difficult to detect.<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/goform\/SafeUrlFilter HTTP\/1.1\nHost: target_router_ip\nContent-Type: application\/x-www-form-urlencoded\nGo\/page=[MALICIOUS_PAYLOAD]<\/code><\/pre>\n<p>In the above example, [MALICIOUS_PAYLOAD] would be replaced with a specially crafted string that causes a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-8168-critical-buffer-overflow-vulnerability-in-d-link-dir-513-1-10\/\"  data-wpil-monitor-id=\"67080\">buffer overflow<\/a> in the SafeUrlFilter function.<\/p>\n<p><strong>Mitigation<\/strong><\/p>\n<p>Users and administrators are advised to apply the vendor patch as soon as it is available. In the meantime, utilizing a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can provide temporary mitigation. These tools can help detect and <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-8059-critical-privilege-escalation-vulnerability-in-b-blocks-wordpress-plugin\/\"  data-wpil-monitor-id=\"76364\">block attempts to exploit this vulnerability<\/a>. However, they are not a permanent solution and should be used in conjunction with other security measures, such as patch management and regular software updates.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview This post brings to light a highly critical vulnerability found in the Tenda FH451 1.0.0.9 router. Identified as CVE-2025-7807, this security flaw poses a significant risk to all users of the affected router. An attacker can exploit this vulnerability remotely to trigger a stack-based buffer overflow that can potentially compromise the entire system or [&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-59633","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\/59633","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=59633"}],"version-history":[{"count":10,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/59633\/revisions"}],"predecessor-version":[{"id":68823,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/59633\/revisions\/68823"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=59633"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=59633"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=59633"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=59633"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=59633"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=59633"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=59633"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=59633"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=59633"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}