{"id":33858,"date":"2025-04-30T00:02:51","date_gmt":"2025-04-30T00:02:51","guid":{"rendered":""},"modified":"2025-05-30T17:54:00","modified_gmt":"2025-05-30T23:54:00","slug":"cve-2025-3802-critical-vulnerability-in-tenda-wifi-routers","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-3802-critical-vulnerability-in-tenda-wifi-routers\/","title":{"rendered":"<strong>CVE-2025-3802: Critical Vulnerability in Tenda Wifi Routers<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>In this post, we will delve into a critical vulnerability (CVE-2025-3802) that affects Tenda W12 and i24 routers, specifically the versions 3.0.0.4(2887) and 3.0.0.5(3644). The susceptibility was located in the function cgiPingSet of the file \/bin\/httpd. This vulnerability matters because the exploitation of this flaw can lead to a stack-based buffer overflow, which can <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-32849-vulnerability-in-telecontrol-server-basic-leads-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"39593\">potentially compromise the system or lead<\/a> to data leakage. Being remote, this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-23176-sql-injection-vulnerability-poses-serious-threat-to-data-security\/\"  data-wpil-monitor-id=\"39945\">vulnerability poses<\/a> significant risks to all Tenda W12 and i24 users worldwide.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-3802<br \/>\nSeverity: Critical, CVSS Score &#8211; 8.8<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-32857-sql-injection-vulnerability-in-telecontrol-server-basic-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"39946\">Potential system<\/a> compromise and data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-3468731203\" 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-2025-4007-critical-stack-based-buffer-overflow-vulnerability-in-tenda-w12-and-i24\/\"  data-wpil-monitor-id=\"41323\">Tenda W12<\/a> | 3.0.0.4(2887) and 3.0.0.5(3644)<br \/>\n<a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-3803-critical-vulnerability-in-tenda-w12-and-i24-3-0-0-4-3-0-0-5-resulting-in-stack-based-buffer-overflow\/\"  data-wpil-monitor-id=\"41554\">Tenda i24<\/a> | 3.0.0.4(2887) and 3.0.0.5(3644)<\/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=\"39727\">vulnerability lies within the cgiPingSet function of the \/bin\/httpd file<\/a>. It is triggered by manipulating the pingIP argument that leads to a 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=\"39592\">buffer overflow<\/a>. A <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-3619-critical-heap-buffer-overflow-vulnerability-in-google-chrome-codecs\/\"  data-wpil-monitor-id=\"40073\">buffer overflow<\/a> occurs when more data is written to a buffer than it can handle, causing it to overflow. This overflow can overwrite adjacent memory locations, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-4759-incorrect-behavior-order-in-lockfile-lint-api-package-potentially-leading-to-system-compromise\/\"  data-wpil-monitor-id=\"52231\">leading to erratic program behavior<\/a>, including memory access errors, incorrect results, and crashes.<br \/>\nIn this case, the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-3786-critical-buffer-overflow-vulnerability-in-tenda-ac15\/\"  data-wpil-monitor-id=\"40290\">buffer overflow<\/a> can be exploited remotely without any user interaction, making it a significant threat. Successful exploitation can lead to unauthorized disclosure of information, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-3906-unauthorized-data-modification-vulnerability-in-wordpress-eduzz-and-woocommerce-plugin\/\"  data-wpil-monitor-id=\"40912\">unauthorized modification<\/a>, and even disruption of service.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-2094098140\" 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&#8217;s a conceptual example of a malicious HTTP <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-1305-cross-site-request-forgery-csrf-vulnerability-in-newsblogger-wordpress-theme\/\"  data-wpil-monitor-id=\"42562\">request that could exploit this vulnerability<\/a>:<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/cgi-bin\/cgiPingSet HTTP\/1.1\nHost: [target IP]\nContent-Type: application\/x-www-form-urlencoded\npingIP=192.168.0.1%00 [Additional malicious payload]<\/code><\/pre>\n<p>In this example, the attacker sends a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-4829-critical-buffer-overflow-vulnerability-in-totolink-http-post-request-handler\/\"  data-wpil-monitor-id=\"52230\">POST request<\/a> to the cgiPingSet endpoint, using a manipulated pingIP argument. The address `192.168.0.1%00` is a null byte that terminates the string and is followed by the excess data (malicious payload) that causes the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-3993-critical-buffer-overflow-vulnerability-in-totolink-n150rt\/\"  data-wpil-monitor-id=\"40466\">buffer to overflow<\/a>.<\/p>\n<p><strong>Remediation<\/strong><\/p>\n<p>The recommended mitigation strategy is to apply the patch provided by the vendor. If not possible immediately, using a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) can offer temporary mitigation. However, it is advised to apply the patch as soon as possible to prevent <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-22636-cross-site-scripting-vulnerability-in-vr-frases-leads-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"40202\">potential system<\/a> compromise or data leakage.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview In this post, we will delve into a critical vulnerability (CVE-2025-3802) that affects Tenda W12 and i24 routers, specifically the versions 3.0.0.4(2887) and 3.0.0.5(3644). The susceptibility was located in the function cgiPingSet of the file \/bin\/httpd. This vulnerability matters because the exploitation of this flaw can lead to a stack-based buffer overflow, which 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":[103],"product":[104],"attack_vector":[86],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-33858","post","type-post","status-publish","format-standard","hentry","category-uncategorized","vendor-apache","product-apache-httpd","attack_vector-buffer-overflow"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/33858","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=33858"}],"version-history":[{"count":12,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/33858\/revisions"}],"predecessor-version":[{"id":46729,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/33858\/revisions\/46729"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=33858"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=33858"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=33858"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=33858"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=33858"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=33858"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=33858"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=33858"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=33858"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}