{"id":43928,"date":"2025-05-24T13:28:15","date_gmt":"2025-05-24T13:28:15","guid":{"rendered":""},"modified":"2025-05-29T23:18:03","modified_gmt":"2025-05-30T05:18:03","slug":"cve-2025-4896-critical-buffer-overflow-vulnerability-in-tenda-ac10","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-4896-critical-buffer-overflow-vulnerability-in-tenda-ac10\/","title":{"rendered":"<strong>CVE-2025-4896: Critical Buffer Overflow Vulnerability in Tenda AC10<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>This blog post will examine the critical vulnerability found in Tenda AC10 16.03.10.13 routers, identified as CVE-2025-4896. This vulnerability is of significant concern due to its criticality and the potential for serious data leakage or system compromise if exploited. As the vulnerability has already been disclosed publicly, it poses an immediate threat to any network reliant on the affected <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-4809-critical-vulnerability-in-tenda-ac7-router-leads-to-system-compromise\/\"  data-wpil-monitor-id=\"50576\">Tenda router<\/a> models. Cybersecurity professionals, network administrators, and anyone using a Tenda AC10 router should be aware of this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-27891-samsung-mobile-and-wearable-processors-vulnerability-leads-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"49363\">vulnerability and the steps necessary to mitigate its potential<\/a> impact.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-4896<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-2024-22190-critical-gitpython-vulnerability-exposes-windows-systems-to-potential-compromise\/\"  data-wpil-monitor-id=\"51353\">Potential system<\/a> compromise or data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-3769478190\" 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>Tenda AC10 | 16.03.10.13<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-43564-improper-access-control-vulnerability-in-coldfusion-leading-to-arbitrary-file-system-read\/\"  data-wpil-monitor-id=\"49378\">vulnerability lies in an unknown functionality of the file<\/a> \/goform\/UserCongratulationsExec. By manipulating the &#8216;getuid&#8217; argument, an attacker can cause a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-29964-heap-based-buffer-overflow-vulnerability-in-windows-media\/\"  data-wpil-monitor-id=\"49495\">buffer overflow<\/a> condition. This could potentially <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-43560-improper-input-validation-vulnerability-in-coldfusion-allowing-arbitrary-code-execution\/\"  data-wpil-monitor-id=\"49362\">allow remote code<\/a> execution or even system compromise. No user interaction is required to exploit this vulnerability, and the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-41645-unauthenticated-remote-attacker-hijacking-via-demo-account\/\"  data-wpil-monitor-id=\"49975\">attack can be launched remotely<\/a> over the internet.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-1879187407\" 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 vulnerability might be exploited. Please note this is a hypothetical example for educational purposes only.<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/goform\/UserCongratulationsExec HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/json\n{ &quot;getuid&quot;: &quot;A&quot;*5000 }<\/code><\/pre>\n<p>In this example, the attacker sends a specially crafted <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-4827-critical-buffer-overflow-vulnerability-in-totolink-http-post-request-handler\/\"  data-wpil-monitor-id=\"50921\">HTTP POST request<\/a> to the \/goform\/UserCongratulationsExec endpoint on the target router. The &#8216;getuid&#8217; argument is overloaded with a large amount of data (represented by &#8216;A&#8217;*5000), causing a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-29962-heap-based-buffer-overflow-vulnerability-in-windows-media\/\"  data-wpil-monitor-id=\"49503\">buffer overflow<\/a>.<\/p>\n<p><strong>Mitigation<\/strong><\/p>\n<p>The immediate mitigation for this vulnerability is to apply the vendor-provided patch. If the patch cannot be applied immediately, it is recommended to use a Web Application Firewall (WAF) or Intrusion Detection System (IDS) as a temporary mitigation measure. It&#8217;s also important to regularly update and patch your <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-43563-coldfusion-improper-access-control-vulnerability-allowing-unauthorized-file-system-read\/\"  data-wpil-monitor-id=\"49447\">systems to protect against such vulnerabilities<\/a> in the future. Check the vendor&#8217;s website for the <a href=\"https:\/\/www.ameeba.com\/blog\/unpacking-politico-s-weekly-cybersecurity-update-a-deep-dive-into-the-latest-threat-landscape\/\"  data-wpil-monitor-id=\"50537\">latest security updates<\/a> and patches.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview This blog post will examine the critical vulnerability found in Tenda AC10 16.03.10.13 routers, identified as CVE-2025-4896. This vulnerability is of significant concern due to its criticality and the potential for serious data leakage or system compromise if exploited. As the vulnerability has already been disclosed publicly, it poses an immediate threat to any [&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":[86,80],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-43928","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-buffer-overflow","attack_vector-rce"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/43928","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=43928"}],"version-history":[{"count":10,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/43928\/revisions"}],"predecessor-version":[{"id":45941,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/43928\/revisions\/45941"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=43928"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=43928"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=43928"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=43928"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=43928"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=43928"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=43928"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=43928"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=43928"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}