{"id":57354,"date":"2025-07-05T06:30:12","date_gmt":"2025-07-05T06:30:12","guid":{"rendered":""},"modified":"2025-07-09T23:08:29","modified_gmt":"2025-07-10T05:08:29","slug":"cve-2025-6887-critical-buffer-overflow-vulnerability-in-tenda-ac5-15-03-06-47","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-6887-critical-buffer-overflow-vulnerability-in-tenda-ac5-15-03-06-47\/","title":{"rendered":"<strong>CVE-2025-6887: Critical Buffer Overflow Vulnerability in Tenda AC5 15.03.06.47<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>A critical vulnerability, designated as CVE-2025-6887, has been discovered in Tenda AC5 version 15.03.06.47, a popular networking device. This vulnerability emanates from an unknown functionality of the file \/goform\/SetSysTimeCfg and can be exploited remotely, posing a severe threat to system security and data integrity.<br \/>\nThe <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-32281-high-severity-missing-authorization-vulnerability-in-focuxtheme-wpkit-for-elementor\/\"  data-wpil-monitor-id=\"65305\">vulnerability has a CVSS severity<\/a> score of 8.8, indicating its potential for severe damage. Any successful exploit could <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5868-critical-vulnerability-in-rt-thread-leading-to-system-compromise-and-data-leakage\/\"  data-wpil-monitor-id=\"63860\">compromise the system or lead to data<\/a> leakage, which makes it a matter of urgent concern for all Tenda AC5 users and cybersecurity professionals.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-6887<br \/>\nSeverity: Critical (CVSS: 8.8)<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5867-critical-vulnerability-in-rt-thread-5-1-0-leading-to-system-compromise-or-data-leakage\/\"  data-wpil-monitor-id=\"63896\">System compromise and potential data<\/a> leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-1520649751\" 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-2025-6886-critical-buffer-overflow-vulnerability-in-tenda-ac5-15-03-06-47\/\"  data-wpil-monitor-id=\"65681\">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-2025-49260-critical-php-remote-file-inclusion-vulnerability-in-themebay-aora\/\"  data-wpil-monitor-id=\"63793\">vulnerability resides in the \/goform\/SetSysTimeCfg file<\/a> of the Tenda AC5 system. By manipulating the &#8216;time\/timeZone&#8217; argument, an attacker can trigger a stack-based <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-6393-critical-buffer-overflow-vulnerability-in-totolink-products\/\"  data-wpil-monitor-id=\"63795\">buffer overflow<\/a>. This overflow could then allow the attacker to execute arbitrary code or disrupt the normal functioning of the system, <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=\"63809\">leading to a potential system compromise or data<\/a> leakage.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-4184914915\" 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>Below is a conceptual example of how the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-48921-cross-site-request-forgery-vulnerability-in-drupal-open-social\/\"  data-wpil-monitor-id=\"65015\">vulnerability might be exploited using a malicious HTTP POST request:<\/a><\/p>\n<pre><code class=\"\" data-line=\"\">POST \/goform\/SetSysTimeCfg HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/x-www-form-urlencoded\ntime=malicious_payload&amp;timeZone=malicious_payload<\/code><\/pre>\n<p>In the above request, &#8216;malicious_payload&#8217; is a placeholder for the actual exploit code that would cause the <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=\"64348\">buffer overflow<\/a>.<\/p>\n<p><strong>Recommendations<\/strong><\/p>\n<p>Users of the affected Tenda AC5 version are strongly recommended to apply the vendor patch as soon as possible. If the patch cannot be applied immediately, implementing a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as temporary mitigation measures, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-50213-special-element-injection-vulnerability-in-apache-airflow-providers-snowflake\/\"  data-wpil-monitor-id=\"63995\">providing some protection against potential attacks exploiting this vulnerability<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview A critical vulnerability, designated as CVE-2025-6887, has been discovered in Tenda AC5 version 15.03.06.47, a popular networking device. This vulnerability emanates from an unknown functionality of the file \/goform\/SetSysTimeCfg and can be exploited remotely, posing a severe threat to system security and data integrity. The vulnerability has a CVSS severity score of 8.8, indicating [&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-57354","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\/57354","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=57354"}],"version-history":[{"count":10,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/57354\/revisions"}],"predecessor-version":[{"id":59131,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/57354\/revisions\/59131"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=57354"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=57354"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=57354"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=57354"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=57354"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=57354"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=57354"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=57354"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=57354"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}