{"id":72735,"date":"2025-09-07T23:11:52","date_gmt":"2025-09-07T23:11:52","guid":{"rendered":""},"modified":"2025-09-26T20:21:42","modified_gmt":"2025-09-27T02:21:42","slug":"cve-2025-9813-buffer-overflow-vulnerability-in-tenda-ch22-1-0-0-1","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-9813-buffer-overflow-vulnerability-in-tenda-ch22-1-0-0-1\/","title":{"rendered":"<strong>CVE-2025-9813: Buffer Overflow Vulnerability in Tenda CH22 1.0.0.1<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>The vulnerability identified as CVE-2025-9813 is a buffer overflow issue that affects Tenda CH22 1.0.0.1. The flaw resides in the function formSetSambaConf of the file \/goform\/SetSambaConf and can be remotely exploited. This vulnerability is of particular concern <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-40743-unauthorized-vnc-access-in-sinumerik-systems-due-to-insufficient-password-verification\/\"  data-wpil-monitor-id=\"80347\">due to its high potential for system<\/a> compromise and data leakage, especially considering that the exploit is publicly available and might be used in real-world attacks.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-9813<br \/>\nSeverity: High (8.8 CVSS score)<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5997-privileged-api-misuse-leads-to-potential-system-compromise-in-beamsec-phishpro\/\"  data-wpil-monitor-id=\"80830\">Potential system compromise<\/a> or data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-4148563974\" 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-2025-9748-critical-buffer-overflow-vulnerability-in-tenda-ch22-1-0-0-1\/\"  data-wpil-monitor-id=\"84660\">Tenda CH22<\/a> | 1.0.0.1<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The exploit works by manipulating the argument samba_userNameSda in the function formSetSambaConf of the file \/goform\/SetSambaConf, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-47973-buffer-over-read-in-virtual-hard-disk-vhdx-leading-to-privilege-elevation\/\"  data-wpil-monitor-id=\"80349\">leading to buffer<\/a> overflow. An attacker can remotely send a specially crafted request to trigger the vulnerability, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-53192-critical-vulnerability-in-unsupported-apache-commons-ognl-leads-to-potential-arbitrary-code-execution\/\"  data-wpil-monitor-id=\"80575\">leading to potential<\/a> system compromise or data leakage.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-1300757307\" 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>Here is a conceptual example of how an attacker might exploit the vulnerability:<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/goform\/SetSambaConf HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/json\n{ &quot;samba_userNameSda&quot;: &quot;A&quot;*1000 } \/\/ Buffer overflow by sending a string of &#039;A&#039;s larger than the buffer size<\/code><\/pre>\n<p>This conceptual <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-47176-code-execution-vulnerability-in-microsoft-office-outlook\/\"  data-wpil-monitor-id=\"80351\">code sends an HTTP POST request to the vulnerable<\/a> endpoint, with a payload that attempts to overflow the buffer by sending an excessively long string of &#8216;A&#8217;s as the samba_userNameSda argument.<\/p>\n<p><strong>Mitigation Measures<\/strong><\/p>\n<p>The recommended course of action to mitigate the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-55293-high-risk-vulnerability-in-meshtastic-s-mesh-networking-solution\/\"  data-wpil-monitor-id=\"81329\">risk posed by this vulnerability<\/a> is to apply the vendor patch as soon as it becomes available. In the meantime, a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as a temporary mitigation strategy, detecting and blocking <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-46414-unlimited-pin-attempts-vulnerability-in-api\/\"  data-wpil-monitor-id=\"81191\">attempts to exploit this vulnerability<\/a>. Organizations should also consider implementing a regular patch <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-50594-critical-password-reset-vulnerability-in-danphe-health-hospital-management-system-emr-3-2\/\"  data-wpil-monitor-id=\"80446\">management strategy and vulnerability<\/a> scanning to identify and remediate such vulnerabilities promptly.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview The vulnerability identified as CVE-2025-9813 is a buffer overflow issue that affects Tenda CH22 1.0.0.1. The flaw resides in the function formSetSambaConf of the file \/goform\/SetSambaConf and can be remotely exploited. This vulnerability is of particular concern due to its high potential for system compromise and data leakage, especially considering that the exploit is [&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-72735","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\/72735","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=72735"}],"version-history":[{"count":9,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/72735\/revisions"}],"predecessor-version":[{"id":77444,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/72735\/revisions\/77444"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=72735"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=72735"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=72735"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=72735"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=72735"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=72735"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=72735"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=72735"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=72735"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}