{"id":59776,"date":"2025-07-31T12:16:53","date_gmt":"2025-07-31T12:16:53","guid":{"rendered":""},"modified":"2025-08-09T06:01:21","modified_gmt":"2025-08-09T12:01:21","slug":"cve-2025-8131-critical-remote-stack-based-buffer-overflow-vulnerability-in-tenda-ac20-16-03-08-05","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-8131-critical-remote-stack-based-buffer-overflow-vulnerability-in-tenda-ac20-16-03-08-05\/","title":{"rendered":"<strong>CVE-2025-8131: Critical Remote Stack-Based Buffer Overflow Vulnerability in Tenda AC20 16.03.08.05<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>CVE-2025-8131 is an identified vulnerability found in Tenda AC20 16.03.08.05. This issue has been categorized as critical due to its potential to compromise systems or lead to data leakage. The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-52808-a-critical-php-remote-file-inclusion-vulnerability-in-realtyelite\/\"  data-wpil-monitor-id=\"65870\">vulnerability affects an unidentified functionality of the file<\/a> \/goform\/SetStaticRouteCfg, where the manipulation of the argument list triggers a stack-based buffer overflow. This kind of attack can be <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-26074-remote-code-execution-vulnerability-in-orkes-conductor-v3-21-11\/\"  data-wpil-monitor-id=\"66003\">remotely executed<\/a> and the exploit details are already disclosed to the public, making it a critical concern for users of the affected device.<br \/>\nThe severity of this <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=\"66928\">vulnerability underscores the need for immediate action by Tenda<\/a> AC20 users. If exploited successfully, cybercriminals can compromise systems, gain <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-50105-critical-vulnerability-in-oracle-universal-work-queue-allowing-unauthorized-data-access\/\"  data-wpil-monitor-id=\"68667\">unauthorized access to sensitive data<\/a>, and disrupt operations. Therefore, it&#8217;s vital to understand the nature of this vulnerability, its impact, and how to mitigate it.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-8131<br \/>\nSeverity: Critical (8.8 CVSS Score)<br \/>\nAttack Vector: Remote<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-31278-memory-corruption-vulnerability-with-potential-system-compromise\/\"  data-wpil-monitor-id=\"70688\">Potential system<\/a> compromise or data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-3621284733\" 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-2025-8810-critical-buffer-overflow-vulnerability-in-tenda-ac20-16-03-08-05\/\"  data-wpil-monitor-id=\"77796\">Tenda AC20<\/a> | 16.03.08.05<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The exploit takes advantage of an unknown function within the \/goform\/SetStaticRouteCfg file. By manipulating the argument list, an attacker can trigger 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=\"66395\">buffer overflow<\/a>. This <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=\"67105\">overflow can then overwrite critical<\/a> memory areas, potentially allowing the attacker to execute arbitrary code on the system.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-2579941739\" 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 a malicious <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=\"66929\">HTTP request that could potentially exploit this vulnerability<\/a>:<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/goform\/SetStaticRouteCfg HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/json\n{\n&quot;argument_list&quot;: &quot;A&quot;*5000\n}<\/code><\/pre>\n<p>In this example, a POST <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-36845-server-side-request-forgery-ssrf-vulnerability-in-eveo-urve-web-manager\/\"  data-wpil-monitor-id=\"70687\">request is made to the vulnerable<\/a> endpoint with an overly large &#8220;argument_list. This could trigger the buffer overflow, potentially <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-41668-critical-file-replacement-leading-to-unauthorized-access\/\"  data-wpil-monitor-id=\"66297\">leading to unauthorized<\/a> code execution or system compromise.<\/p>\n<p><strong>Mitigation Guidance<\/strong><\/p>\n<p>Users are recommended to immediately apply the vendor patch once it is available. In the interim, deploying a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can provide temporary mitigation against <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-46334-critical-vulnerability-in-git-gui-enables-potential-system-compromise\/\"  data-wpil-monitor-id=\"70718\">potential attacks exploiting this vulnerability<\/a>. Regularly updating and patching <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-33077-local-stack-based-buffer-overflow-vulnerability-in-ibm-engineering-systems-design-rhapsody\/\"  data-wpil-monitor-id=\"68339\">systems can significantly reduce the risk of such vulnerabilities<\/a> being exploited.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview CVE-2025-8131 is an identified vulnerability found in Tenda AC20 16.03.08.05. This issue has been categorized as critical due to its potential to compromise systems or lead to data leakage. The vulnerability affects an unidentified functionality of the file \/goform\/SetStaticRouteCfg, where the manipulation of the argument list triggers a stack-based buffer overflow. This kind of [&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-59776","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\/59776","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=59776"}],"version-history":[{"count":11,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/59776\/revisions"}],"predecessor-version":[{"id":70195,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/59776\/revisions\/70195"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=59776"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=59776"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=59776"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=59776"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=59776"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=59776"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=59776"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=59776"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=59776"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}