{"id":57291,"date":"2025-07-05T05:29:53","date_gmt":"2025-07-05T05:29:53","guid":{"rendered":""},"modified":"2025-10-22T19:05:07","modified_gmt":"2025-10-23T01:05:07","slug":"cve-2025-6886-critical-buffer-overflow-vulnerability-in-tenda-ac5-15-03-06-47","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-6886-critical-buffer-overflow-vulnerability-in-tenda-ac5-15-03-06-47\/","title":{"rendered":"<strong>CVE-2025-6886: Critical Buffer Overflow Vulnerability in Tenda AC5 15.03.06.47<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>A severe vulnerability, identified as CVE-2025-6886, has been recently discovered within the Tenda AC5 15.03.06.47. This vulnerability is classified as critical and poses significant risks to the affected systems. It <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49261-high-impact-remote-file-inclusion-vulnerability-in-themebay-s-diza\/\"  data-wpil-monitor-id=\"63775\">impacts an unknown functionality of the file<\/a> \/goform\/openSchedWifi. The issue lies within the manipulation of the argument schedStartTime\/schedEndTime which leads to a stack-based <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-6393-critical-buffer-overflow-vulnerability-in-totolink-products\/\"  data-wpil-monitor-id=\"63796\">buffer overflow<\/a>. This vulnerability is of particular concern as it can be exploited remotely and has the potential to compromise systems or leak <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49653-exposure-of-sensitive-data-in-lablup-s-backendai\/\"  data-wpil-monitor-id=\"64062\">sensitive data<\/a>.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-6886<br \/>\nSeverity: Critical, CVSS Score: 8.8<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5866-critical-vulnerability-in-rt-thread-5-1-0-potentially-leading-to-system-compromise-or-data-leakage\/\"  data-wpil-monitor-id=\"63812\">Potential system compromise or data<\/a> leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-1915764233\" 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-2025-6887-critical-buffer-overflow-vulnerability-in-tenda-ac5-15-03-06-47\/\"  data-wpil-monitor-id=\"65770\">Tenda AC5<\/a> | 15.03.06.47<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49258-critical-php-local-file-inclusion-vulnerability-in-themebay-maia\/\"  data-wpil-monitor-id=\"63790\">vulnerability exploits an unknown functionality in the file<\/a> \/goform\/openSchedWifi. By manipulating the argument schedStartTime\/schedEndTime, an attacker can trigger a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-6565-critical-stack-based-buffer-overflow-vulnerability-in-netgear-wnce3001-1-0-0-50\/\"  data-wpil-monitor-id=\"64347\">stack-based buffer overflow<\/a>. This overflow can <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-4994-critical-csrf-vulnerability-in-gitlab-s-graphql-api-leading-to-arbitrary-graphql-mutations\/\"  data-wpil-monitor-id=\"63729\">lead to unauthorized execution of arbitrary<\/a> code, system crashes, or information disclosure. It is worth noting that this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-3090-unauthenticated-remote-attack-leading-to-potential-data-leakage-and-system-compromise\/\"  data-wpil-monitor-id=\"65017\">attack can be launched remotely<\/a>, making it a significant threat.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-1092052803\" 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 is a conceptual example of a malicious HTTP <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-48921-cross-site-request-forgery-vulnerability-in-drupal-open-social\/\"  data-wpil-monitor-id=\"65016\">request that could potentially exploit this vulnerability<\/a>:<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/goform\/openSchedWifi HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/json\n{ &quot;schedStartTime&quot;: &quot;large_string&quot;, &quot;schedEndTime&quot;:&quot;large_string&quot; }<\/code><\/pre>\n<p>In this example, the &#8216;large_string&#8217; is a long, crafted string designed to overflow the buffer and potentially <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-47029-critical-remote-code-execution-vulnerability-in-ncr-terminal-handler\/\"  data-wpil-monitor-id=\"63739\">execute arbitrary code<\/a> or crash the system.<\/p>\n<p><strong>Mitigation and Recommendations<\/strong><\/p>\n<p>The best practice to mitigate this vulnerability is to apply the vendor&#8217;s patch as soon as it is available. For temporary mitigation, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can help prevent potential attacks. Regular monitoring and updating of your <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-7093-critical-vulnerability-in-belkin-f9k1122-1-00-33-impacting-system-security-and-data-integrity\/\"  data-wpil-monitor-id=\"91108\">systems are also crucial to keep your environment secure<\/a>.<br \/>\nRemember, cybersecurity is not a one-time event but an ongoing process. Stay informed about the latest threats and <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2021-41691-sql-injection-vulnerability-in-os4ed-open-source-information-system-community\/\"  data-wpil-monitor-id=\"64165\">vulnerabilities<\/a> and take proactive measures to protect your systems and data.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview A severe vulnerability, identified as CVE-2025-6886, has been recently discovered within the Tenda AC5 15.03.06.47. This vulnerability is classified as critical and poses significant risks to the affected systems. It impacts an unknown functionality of the file \/goform\/openSchedWifi. The issue lies within the manipulation of the argument schedStartTime\/schedEndTime which leads to a stack-based buffer [&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-57291","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\/57291","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=57291"}],"version-history":[{"count":12,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/57291\/revisions"}],"predecessor-version":[{"id":84127,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/57291\/revisions\/84127"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=57291"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=57291"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=57291"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=57291"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=57291"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=57291"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=57291"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=57291"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=57291"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}