{"id":51946,"date":"2025-06-14T13:56:11","date_gmt":"2025-06-14T13:56:11","guid":{"rendered":""},"modified":"2025-06-29T17:18:55","modified_gmt":"2025-06-29T23:18:55","slug":"cve-2025-5849-critical-buffer-overflow-vulnerability-in-tenda-ac15","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-5849-critical-buffer-overflow-vulnerability-in-tenda-ac15\/","title":{"rendered":"<strong>CVE-2025-5849: Critical Buffer Overflow Vulnerability in Tenda AC15<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>The cybersecurity landscape is constantly evolving with new threats continually emerging. One of these threats is a critical vulnerability identified as CVE-2025-5849. This <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5527-critical-vulnerability-exposing-potential-system-compromise-in-tenda-rx3\/\"  data-wpil-monitor-id=\"58687\">vulnerability affects the popular Tenda<\/a> AC15 15.03.05.19_multi router. The flaw lies in the function formSetSafeWanWebMan of the file \/goform\/SetRemoteWebCfg of the <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=\"59491\">HTTP POST Request<\/a> Handler.<br \/>\nThis <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-45576-memory-corruption-vulnerability-in-ope-module-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"58257\">vulnerability matters because it can lead<\/a> to a stack-based buffer overflow, potentially resulting in system compromise or data leakage. Since it&#8217;s possible to initiate the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-3755-unauthenticated-remote-attack-on-mitsubishi-electric-melsec-iq-f-series-cpu-modules\/\"  data-wpil-monitor-id=\"58357\">attack remotely<\/a> and the exploit is already public, the risk for users is significant.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-5849<br \/>\nSeverity: Critical (8.8 CVSS)<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-45566-critical-memory-corruption-vulnerability-resulting-in-potential-system-compromise\/\"  data-wpil-monitor-id=\"58263\">Potential system<\/a> compromise or data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-2104768461\" 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-2025-5851-critical-buffer-overflow-vulnerability-in-tenda-ac15-15-03-05-19-multi\/\"  data-wpil-monitor-id=\"60065\">Tenda AC15<\/a> | 15.03.05.19_multi<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>This <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-49835-memory-corruption-vulnerability-leading-to-potential-data-leakage-or-system-compromise\/\"  data-wpil-monitor-id=\"58396\">vulnerability stems from improper validation of user-supplied data<\/a>, which can lead to a stack-based buffer overflow. The problem occurs when the remoteIp argument is manipulated in the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5739-critical-buffer-overflow-vulnerability-in-totolink-x15-http-post-request-handler\/\"  data-wpil-monitor-id=\"59803\">HTTP POST Request<\/a> Handler. This could allow an attacker to overwrite the allocated buffer, leading to the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-32106-unauthenticated-remote-code-execution-in-audiocodes-mediapack-mp-11x\/\"  data-wpil-monitor-id=\"58582\">execution of arbitrary code<\/a>, or even cause the system to crash, resulting in a denial of service.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-2204304502\" 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 how this vulnerability might be exploited. This is a simple <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-6162-critical-buffer-overflow-vulnerability-in-totolink-ex1200t-http-post-request-handler\/\"  data-wpil-monitor-id=\"62262\">HTTP POST request<\/a> with manipulated remoteIp argument:<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/goform\/SetRemoteWebCfg HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/x-www-form-urlencoded\nremoteIp=192.168.1.1%00[insert malicious code here]<\/code><\/pre>\n<p>In this example, the IP address has been followed by a null byte (%00), effectively terminating the string. The malicious <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-32105-buffer-overflow-vulnerability-in-sangoma-img2020-http-server-leading-to-remote-code-execution\/\"  data-wpil-monitor-id=\"58532\">code following the null byte could then overflow the buffer<\/a>.<\/p>\n<p><strong>Mitigation<\/strong><\/p>\n<p>The best way to mitigate this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-4578-sql-injection-vulnerability-in-file-provider-wordpress-plugin\/\"  data-wpil-monitor-id=\"58828\">vulnerability is by applying the patch provided<\/a> by the vendor. If the patch can&#8217;t be applied immediately, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can provide temporary mitigation. It is also advisable to limit access to the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-23244-nvidia-gpu-display-driver-linux-vulnerability-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"58288\">vulnerable system<\/a> to trusted networks and hosts.<br \/>\nUltimately, staying updated with the latest security patches and maintaining a robust security infrastructure are <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-35940-hard-coded-jwt-signing-key-vulnerability-in-archiverspaapi-asp-net-application\/\"  data-wpil-monitor-id=\"63023\">key to minimizing the risk of such vulnerabilities<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview The cybersecurity landscape is constantly evolving with new threats continually emerging. One of these threats is a critical vulnerability identified as CVE-2025-5849. This vulnerability affects the popular Tenda AC15 15.03.05.19_multi router. The flaw lies in the function formSetSafeWanWebMan of the file \/goform\/SetRemoteWebCfg of the HTTP POST Request Handler. This vulnerability matters because it 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":[86,87],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-51946","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-buffer-overflow","attack_vector-dos"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/51946","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=51946"}],"version-history":[{"count":14,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/51946\/revisions"}],"predecessor-version":[{"id":56616,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/51946\/revisions\/56616"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=51946"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=51946"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=51946"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=51946"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=51946"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=51946"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=51946"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=51946"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=51946"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}