{"id":74964,"date":"2025-09-14T23:14:03","date_gmt":"2025-09-14T23:14:03","guid":{"rendered":""},"modified":"2025-09-28T06:30:06","modified_gmt":"2025-09-28T12:30:06","slug":"cve-2025-10120-critical-buffer-overflow-vulnerability-in-tenda-ac20-routers","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-10120-critical-buffer-overflow-vulnerability-in-tenda-ac20-routers\/","title":{"rendered":"<strong>CVE-2025-10120: Critical Buffer Overflow Vulnerability in Tenda AC20 Routers<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>A critical vulnerability, identified as CVE-2025-10120, has been found in Tenda AC20 routers up to version 16.03.08.12, a widely used network device for both home and business users. This vulnerability exists in the strcpy function of the \/goform\/GetParentControlInfo file and can be exploited remotely. Given the severity of the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-46658-critical-security-vulnerability-in-exonautweb-s-4c-strategies-exonaut-21-6\/\"  data-wpil-monitor-id=\"82455\">vulnerability and its potential implications on system security<\/a>, it&#8217;s crucial for network administrators and users of Tenda AC20 routers to understand the risk and take immediate actions to mitigate it.<br \/>\nThe public disclosure of this exploit means that malicious entities may already be aware of the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2022-45134-critical-vulnerability-in-mahara-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"82860\">vulnerability and could potentially be using it to compromise systems<\/a> or exfiltrate sensitive data. The risk is high and immediate action is required.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-10120<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-2025-7775-critical-memory-overflow-vulnerability-in-netscaler-adc-and-gateway-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"83716\">System compromise and potential<\/a> data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-1648865554\" 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-2025-9791-critical-vulnerability-in-tenda-ac20-16-03-08-05-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"84927\">Tenda AC20<\/a> | Up to 16.03.08.12<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-30635-critical-php-remote-file-inclusion-vulnerability-in-themeatelier-idonatepro\/\"  data-wpil-monitor-id=\"82834\">vulnerability lies in the strcpy function of the \/goform\/GetParentControlInfo file<\/a>. When a malicious entity manipulates the mac argument, it can lead to a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-9246-critical-buffer-overflow-vulnerability-in-linksys-routers\/\"  data-wpil-monitor-id=\"82595\">buffer overflow<\/a>. The buffer overflow can then be used to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-9060-msoft-mflash-arbitrary-code-execution-vulnerability\/\"  data-wpil-monitor-id=\"82450\">execute arbitrary code<\/a> in the context of the router&#8217;s operating system, allowing an attacker to compromise the system or exfiltrate data.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-600624444\" 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>An attacker might exploit this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-8592-wordpress-inspiro-theme-vulnerability-to-cross-site-request-forgery-csrf\/\"  data-wpil-monitor-id=\"85438\">vulnerability by sending a specially crafted HTTP request<\/a> to the router. The following is a conceptual example of how the vulnerability might be exploited, using a hypothetical malicious payload:<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/goform\/GetParentControlInfo HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/x-www-form-urlencoded\nmac=AA:BB:CC:DD:EE:FF%00[PADDING][REVERSED_SHELL_CODE]<\/code><\/pre>\n<p>In this example, &#8220;[PADDING] represents a sequence of bytes crafted to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-9247-remote-stack-based-buffer-overflow-vulnerability-in-linksys-routers\/\"  data-wpil-monitor-id=\"82611\">overflow the buffer<\/a>, and [REVERSED_SHELL_CODE] is the malicious <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-52395-remote-arbitrary-code-execution-vulnerability-in-roadcute-api-v-1\/\"  data-wpil-monitor-id=\"82590\">code that the attacker wants to execute<\/a> on the router&#8217;s operating system.<br \/>\nPlease note: this is a conceptual example and not a real exploit code. It&#8217;s <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-47696-high-risk-php-remote-file-inclusion-vulnerability-in-solwin-blog-designer-pro\/\"  data-wpil-monitor-id=\"86068\">designed to illustrate how an attacker might exploit the vulnerability<\/a>.<\/p>\n<p><strong>Mitigation Guidance<\/strong><\/p>\n<p>Users and administrators are advised to apply the vendor&#8217;s patch as soon as possible. If the patch cannot be applied immediately, a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can be used as a temporary mitigation measure. However, these are not long-term solutions and may not fully protect the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-22404-potential-system-compromise-due-to-use-after-free-vulnerability\/\"  data-wpil-monitor-id=\"85653\">system from being compromised<\/a>. Updating the router&#8217;s firmware to the latest patched <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-46715-kernel-pointer-vulnerability-in-sandboxie-versions-prior-to-1-15-12\/\"  data-wpil-monitor-id=\"82757\">version remains the most effective way to mitigate this vulnerability<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview A critical vulnerability, identified as CVE-2025-10120, has been found in Tenda AC20 routers up to version 16.03.08.12, a widely used network device for both home and business users. This vulnerability exists in the strcpy function of the \/goform\/GetParentControlInfo file and can be exploited remotely. Given the severity of the vulnerability and its potential implications [&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-74964","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\/74964","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=74964"}],"version-history":[{"count":13,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/74964\/revisions"}],"predecessor-version":[{"id":78861,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/74964\/revisions\/78861"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=74964"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=74964"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=74964"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=74964"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=74964"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=74964"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=74964"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=74964"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=74964"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}