{"id":72734,"date":"2025-09-07T22:11:37","date_gmt":"2025-09-07T22:11:37","guid":{"rendered":""},"modified":"2025-10-02T00:14:27","modified_gmt":"2025-10-02T06:14:27","slug":"cve-2025-9812-critical-buffer-overflow-vulnerability-in-tenda-ch22-1-0-0-1","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-9812-critical-buffer-overflow-vulnerability-in-tenda-ch22-1-0-0-1\/","title":{"rendered":"<strong>CVE-2025-9812: Critical Buffer Overflow Vulnerability in Tenda CH22 1.0.0.1<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>The cybersecurity landscape never stays the same for long, with new vulnerabilities being identified regularly. One such recent discovery is the CVE-2025-9812, a critical buffer overflow vulnerability affecting Tenda CH22 1.0.0.1. This vulnerability, <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=\"80348\">due to its potential for system<\/a> compromise and data leakage, poses a significant threat to any system or organization using this version of Tenda CH22. The importance of understanding and <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-58280-object-heap-address-exposure-vulnerability-in-ark-ets\/\"  data-wpil-monitor-id=\"87248\">addressing this vulnerability<\/a> cannot be overstated.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-9812<br \/>\nSeverity: Critical (8.8\/10 on the CVSS scale)<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: Low<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=\"80831\">Potential system compromise<\/a> or data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-2182405998\" 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=\"84659\">Tenda CH22<\/a> | 1.0.0.1<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49661-untrusted-pointer-dereference-vulnerability-in-windows-ancillary-function-driver-for-winsock\/\"  data-wpil-monitor-id=\"80364\">vulnerability exists within the `formexeCommand` function<\/a> of the `\/goform\/exeCommand` file in the Tenda CH22 1.0.0.1. By manipulating the `cmdinput` argument, an attacker can cause a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-9245-high-risk-buffer-overflow-vulnerability-in-linksys-extenders\/\"  data-wpil-monitor-id=\"81040\">buffer overflow<\/a>. This <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-47174-heap-based-buffer-overflow-in-microsoft-office-excel-leading-to-unauthorized-code-execution\/\"  data-wpil-monitor-id=\"82014\">overflow can lead<\/a> to unpredictable behavior, including potential system compromise and data leakage. This <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-48860-exploiting-backup-archives-to-gain-remote-access-in-ctrlx-os\/\"  data-wpil-monitor-id=\"81426\">exploit has been publicly disclosed and can be performed remotely<\/a>, increasing the ease and potential scope of attacks.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-1480453082\" 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&#8217;s a conceptual example of how this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-8714-critical-postgresql-vulnerability-allowing-malicious-code-injection-by-superusers\/\"  data-wpil-monitor-id=\"80640\">vulnerability might be exploited via a malicious<\/a> HTTP POST request:<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/goform\/exeCommand HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/json\n{ &quot;cmdinput&quot;: &quot;[malicious payload causing buffer overflow]&quot; }<\/code><\/pre>\n<p>In the above example, the malicious payload is sent via the &#8216;cmdinput&#8217; field in the HTTP POST request, causing a buffer overflow within the `formexeCommand` function, <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=\"80566\">leading to potential<\/a> system compromise or data leakage.<\/p>\n<p><strong>Mitigation Guidance<\/strong><\/p>\n<p>To mitigate this vulnerability, the most effective solution is to apply the vendor-provided patch, if available. If for any reason, the patch cannot be applied immediately, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as a temporary mitigation measure. These <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2022-43110-critical-unauthenticated-remote-system-configuration-vulnerability-in-voltronic-power-viewpower-powershield-netguard\/\"  data-wpil-monitor-id=\"83109\">systems can be configured<\/a> to detect and block exploitation attempts, protecting the system until the patch can be applied. However, these measures are not foolproof and cannot substitute the need for patching.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview The cybersecurity landscape never stays the same for long, with new vulnerabilities being identified regularly. One such recent discovery is the CVE-2025-9812, a critical buffer overflow vulnerability affecting Tenda CH22 1.0.0.1. This vulnerability, due to its potential for system compromise and data leakage, poses a significant threat to any system or organization using this [&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-72734","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\/72734","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=72734"}],"version-history":[{"count":11,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/72734\/revisions"}],"predecessor-version":[{"id":80091,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/72734\/revisions\/80091"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=72734"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=72734"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=72734"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=72734"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=72734"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=72734"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=72734"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=72734"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=72734"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}