{"id":28750,"date":"2025-04-22T05:40:02","date_gmt":"2025-04-22T05:40:02","guid":{"rendered":""},"modified":"2025-09-26T20:58:54","modified_gmt":"2025-09-27T02:58:54","slug":"cve-2025-25456-buffer-overflow-vulnerability-in-tenda-ac10-v4-0si-v16-03-10-20","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-25456-buffer-overflow-vulnerability-in-tenda-ac10-v4-0si-v16-03-10-20\/","title":{"rendered":"<strong>CVE-2025-25456: Buffer Overflow Vulnerability in Tenda AC10 V4.0si_V16.03.10.20<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>The security of our digital landscape is constantly under threat from hackers trying to exploit system vulnerabilities. The recent discovery of a critical vulnerability, CVE-2025-25456, in Tenda AC10 V4.0si_V16.03.10.20, is a stark reminder of the importance of regular system updates and patch application. This flaw is a serious concern <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-45554-high-severity-memory-corruption-due-to-race-condition\/\"  data-wpil-monitor-id=\"58177\">due to its high severity<\/a> and potential impact on confidentiality, integrity, and availability of data.<br \/>\nThe <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-45429-stack-overflow-vulnerability-in-tenda-ac9-v1-0-router\/\"  data-wpil-monitor-id=\"40030\">vulnerability affects Tenda<\/a> AC10 V4.0si_V16.03.10.20, a widely used wireless router. As a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-3538-stack-based-buffer-overflow-in-d-link-di-8100-16-07-26a1\/\"  data-wpil-monitor-id=\"33009\">buffer overflow<\/a> vulnerability, it&#8217;s susceptible to exploitation by malicious actors. This could <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-23391-incorrect-privilege-assignment-in-suse-rancher-potentially-leading-to-system-compromise\/\"  data-wpil-monitor-id=\"33074\">lead to serious implications including potential system<\/a> compromise or data leakage, creating significant risk for users.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-25456<br \/>\nSeverity: Critical &#8211; CVSS 9.8<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: None<br \/>\nImpact: System compromise, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-50350-broken-cryptographic-algorithm-leads-to-potential-data-leakage-in-hcl-dryice-myxalytics\/\"  data-wpil-monitor-id=\"33684\">potential data leakage<\/a><\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-1347713908\" 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-2025-45779-buffer-overflow-vulnerability-in-tenda-ac10-v1-0re\/\"  data-wpil-monitor-id=\"45531\">Tenda AC10<\/a> | V4.0si_V16.03.10.20<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-45428-remote-arbitrary-code-execution-vulnerability-in-tenda-ac9-v1-0-firmware\/\"  data-wpil-monitor-id=\"40042\">vulnerability resides in the AdvSetMacMtuWan function of the Tenda<\/a> AC10 V4.0si_V16.03.10.20. It&#8217;s a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-56406-buffer-overflow-vulnerability-in-perl-leading-to-potential-denial-of-service-and-code-execution\/\"  data-wpil-monitor-id=\"33111\">buffer overflow vulnerability<\/a>, which happens when more data is put into a buffer or holding area than the buffer can handle. This causes an overflow of data that can overwrite other data points, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-37297-vulnerability-in-ami-s-spx-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"33411\">potentially leading<\/a> to erratic program behavior, system crashes, or exploitable conditions for attackers.<br \/>\nIn this case, an attacker can <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-50123-exploitable-vulnerability-in-hozard-alarm-system-sms-authentication\/\"  data-wpil-monitor-id=\"34965\">exploit the vulnerability<\/a> by sending a specially crafted request to the mac2 parameter of the AdvSetMacMtuWan function. This causes the buffer to overflow and allows the attacker to execute <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-42970-use-after-free-vulnerability-in-multiple-apple-platforms-may-lead-to-arbitrary-code-execution\/\"  data-wpil-monitor-id=\"33023\">arbitrary code<\/a> or potentially gain control of the system.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-2573635164\" 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 <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2021-27289-replay-attack-vulnerability-uncovered-in-zigbee-smart-home-kit\/\"  data-wpil-monitor-id=\"35536\">attacker might exploit this vulnerability<\/a> through a malicious HTTP request that could look something like this:<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/AdvSetMacMtuWan\/mac2 HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/json\n{ &quot;mac2&quot;: &quot;AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\u2026&quot; }<\/code><\/pre>\n<p>In this example, the &#8216;A&#8217;s represent a large amount of data exceeding the buffer&#8217;s capacity, leading to overflow and the potential <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-21860-arbitrary-code-execution-vulnerability-in-openharmony\/\"  data-wpil-monitor-id=\"33863\">execution of malicious code<\/a>.<\/p>\n<p><strong>Mitigation Guidance<\/strong><\/p>\n<p>Users of Tenda AC10 V4.0si_V16.03.10.20 are advised to apply the vendor patch as soon as possible to mitigate the risk. In the absence of a vendor patch, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-31100-unrestricted-file-upload-leads-to-web-shell-deployment-in-mojoomla-school-management\/\"  data-wpil-monitor-id=\"84750\">deploying a Web<\/a> Application Firewall (WAF) or Intrusion Detection System (IDS) can provide temporary mitigation. It&#8217;s crucial to regularly update <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-0213-buffer-overflow-vulnerability-in-ta-for-linux-and-macos-leading-to-system-compromise\/\"  data-wpil-monitor-id=\"33880\">systems and apply patches promptly to protect against such vulnerabilities<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview The security of our digital landscape is constantly under threat from hackers trying to exploit system vulnerabilities. The recent discovery of a critical vulnerability, CVE-2025-25456, in Tenda AC10 V4.0si_V16.03.10.20, is a stark reminder of the importance of regular system updates and patch application. This flaw is a serious concern due to its high severity [&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-28750","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\/28750","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=28750"}],"version-history":[{"count":15,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/28750\/revisions"}],"predecessor-version":[{"id":77535,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/28750\/revisions\/77535"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=28750"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=28750"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=28750"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=28750"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=28750"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=28750"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=28750"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=28750"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=28750"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}