{"id":42960,"date":"2025-05-23T02:14:02","date_gmt":"2025-05-23T02:14:02","guid":{"rendered":""},"modified":"2025-09-10T12:13:49","modified_gmt":"2025-09-10T18:13:49","slug":"cve-2025-4732-critical-buffer-overflow-vulnerability-in-totolink-a3002r-and-a3002ru","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-4732-critical-buffer-overflow-vulnerability-in-totolink-a3002r-and-a3002ru\/","title":{"rendered":"<strong>CVE-2025-4732: Critical Buffer Overflow Vulnerability in TOTOLINK A3002R and A3002RU<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>A critical vulnerability, identified as CVE-2025-4732, has been discovered in TOTOLINK A3002R and A3002RU 3.0.0-B20230809.1615. This flaw affects an unknown section of code in the file \/boafrm\/formFilter, which is a component of the HTTP POST Request Handler. The vulnerability is triggered by an improper handling of the argument ip6addr, leading to a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-32756-critical-buffer-overflow-vulnerability-in-multiple-fortinet-products\/\"  data-wpil-monitor-id=\"48388\">buffer overflow<\/a>. This flaw is especially alarming as the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-41645-unauthenticated-remote-attacker-hijacking-via-demo-account\/\"  data-wpil-monitor-id=\"49977\">attack can be launched remotely<\/a> and the exploit is already publicly disclosed, increasing the chances of exploitation by malicious users.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-4732<br \/>\nSeverity: Critical, CVSS Score 8.8<br \/>\nAttack Vector: Remote<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: None<br \/>\nImpact: <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=\"49321\">Potential system<\/a> compromise or data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-255873675\" 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-2025-45863-buffer-overflow-vulnerability-in-totolink-a3002r-routers\/\"  data-wpil-monitor-id=\"48884\">TOTOLINK A3002R<\/a> | 3.0.0-B20230809.1615<br \/>\n<a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-4825-critical-buffer-overflow-vulnerability-in-totolink-a702r-a3002r-and-a3002ru-routers\/\"  data-wpil-monitor-id=\"51247\">TOTOLINK A3002RU<\/a> | 3.0.0-B20230809.1615<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The exploit works by manipulating the &#8216;ip6addr&#8217; argument in the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-4827-critical-buffer-overflow-vulnerability-in-totolink-http-post-request-handler\/\"  data-wpil-monitor-id=\"50916\">HTTP POST Request<\/a> Handler. The manipulation causes an overflow of the buffer, potentially allowing a malicious actor to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-26389-arbitrary-code-execution-vulnerability-in-ozw672-and-ozw772\/\"  data-wpil-monitor-id=\"48479\">execute arbitrary code<\/a> or disrupt the operation of the device, leading to a potential system compromise or data leakage.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-121388991\" 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>A conceptual malicious <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-4829-critical-buffer-overflow-vulnerability-in-totolink-http-post-request-handler\/\"  data-wpil-monitor-id=\"52199\">HTTP POST request<\/a> might look like the following:<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/boafrm\/formFilter HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/x-www-form-urlencoded\nip6addr=AAAA...[long string of A&#039;s to cause buffer overflow]...<\/code><\/pre>\n<p>In this example, the &#8216;ip6addr&#8217; argument is filled with a long string designed to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-29840-critical-stack-based-buffer-overflow-vulnerability-in-windows-media\/\"  data-wpil-monitor-id=\"48489\">overflow the buffer<\/a>. The result is a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-4759-incorrect-behavior-order-in-lockfile-lint-api-package-potentially-leading-to-system-compromise\/\"  data-wpil-monitor-id=\"51248\">potential system<\/a> compromise or data leakage, depending on the nature of the overflow and the system&#8217;s response to it.<\/p>\n<p><strong>Mitigation Steps<\/strong><\/p>\n<p>In <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5391-arbitrary-file-deletion-vulnerability-in-woocommerce-purchase-orders-plugin-for-wordpress\/\"  data-wpil-monitor-id=\"81311\">order to mitigate this vulnerability<\/a>, it is recommended to apply the vendor patch as soon as it is available. Until then, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as a temporary mitigation measure. These tools can help in detecting and blocking malicious HTTP POST <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-47708-cross-site-request-forgery-vulnerability-in-drupal-enterprise-mfa-tfa\/\"  data-wpil-monitor-id=\"49788\">requests that aim to exploit this particular vulnerability<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview A critical vulnerability, identified as CVE-2025-4732, has been discovered in TOTOLINK A3002R and A3002RU 3.0.0-B20230809.1615. This flaw affects an unknown section of code in the file \/boafrm\/formFilter, which is a component of the HTTP POST Request Handler. The vulnerability is triggered by an improper handling of the argument ip6addr, leading to a buffer overflow. [&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-42960","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\/42960","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=42960"}],"version-history":[{"count":11,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/42960\/revisions"}],"predecessor-version":[{"id":73759,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/42960\/revisions\/73759"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=42960"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=42960"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=42960"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=42960"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=42960"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=42960"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=42960"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=42960"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=42960"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}