{"id":71990,"date":"2025-09-06T16:02:51","date_gmt":"2025-09-06T16:02:51","guid":{"rendered":""},"modified":"2025-10-22T19:05:03","modified_gmt":"2025-10-23T01:05:03","slug":"cve-2025-9780-totolink-a702r-vulnerability-could-lead-to-system-compromise","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-9780-totolink-a702r-vulnerability-could-lead-to-system-compromise\/","title":{"rendered":"<strong>CVE-2025-9780: TOTOLINK A702R Vulnerability Could Lead to System Compromise<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>The cybersecurity world has yet again been hit with a new vulnerability, CVE-2025-9780, that affects TOTOLINK A702R 4.0.0-B20211108.1423. This vulnerability is significant due to the potential system compromise or data leakage that could occur if exploited. It&#8217;s important for users and administrators of this software to understand the depth of this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-43245-critical-downgrade-issue-affecting-multiple-macos-versions\/\"  data-wpil-monitor-id=\"81798\">issue as it affects<\/a> a popular function, sub_419BE0, in the file \/boafrm\/formIpQoS. With the exploit being published and available for use, it has become even more <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-54135-critical-remote-code-execution-vulnerability-in-cursor-code-editor\/\"  data-wpil-monitor-id=\"79575\">critical to understand and mitigate this vulnerability<\/a>.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-9780<br \/>\nSeverity: High (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-2025-42957-critical-backdoor-vulnerability-in-sap-s-4hana-exposes-systems-to-potential-compromise\/\"  data-wpil-monitor-id=\"79582\">System compromise and potential<\/a> data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-2480753263\" 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-2025-9779-totolink-a702r-buffer-overflow-vulnerability-in-the-function-sub-4162dc\/\"  data-wpil-monitor-id=\"85112\">TOTOLINK A702R<\/a> | 4.0.0-B20211108.1423<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The flaw in the TOTOLINK A702R stems from a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-9245-high-risk-buffer-overflow-vulnerability-in-linksys-extenders\/\"  data-wpil-monitor-id=\"81050\">buffer overflow vulnerability<\/a> that happens due to incorrect handling of the &#8216;mac&#8217; argument in the function &#8216;sub_419BE0&#8217; of the file &#8216;\/boafrm\/formIpQoS. When malformed or oversized data is input into the &#8216;mac&#8217; argument, the buffer overflows, causing erratic program behavior or even allowing an attacker to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-23264-critical-vulnerability-in-nvidia-megatron-lm-may-lead-to-code-execution-and-data-tampering\/\"  data-wpil-monitor-id=\"79899\">execute arbitrary code<\/a>.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-499765312\" 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 an HTTP <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49382-cross-site-request-forgery-vulnerability-in-jobzilla-wordpress-theme\/\"  data-wpil-monitor-id=\"81168\">request that could exploit this vulnerability<\/a>:<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/boafrm\/formIpQoS HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/json\n{ &quot;mac&quot;: &quot;OVERSIZED_INPUT_DATA&quot; }<\/code><\/pre>\n<p>In this example, &#8220;OVERSIZED_INPUT_DATA&#8221; represents a value that is larger than the buffer assigned to the &#8216;mac&#8217; argument. When this data is processed, it overflows the buffer, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-47136-integer-underflow-vulnerability-in-indesign-desktop-versions-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"79683\">leading to the vulnerability<\/a>.<\/p>\n<p><strong>Mitigation Guidance<\/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=\"81307\">order to mitigate this vulnerability<\/a>, it is recommended to apply the vendor patch as soon as it is available. As an interim solution, the use of a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can help identify and block <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-46414-unlimited-pin-attempts-vulnerability-in-api\/\"  data-wpil-monitor-id=\"81198\">attempts to exploit this vulnerability<\/a>. Please note that these are temporary measures and applying the vendor patch should be the ultimate goal to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-7093-critical-vulnerability-in-belkin-f9k1122-1-00-33-impacting-system-security-and-data-integrity\/\"  data-wpil-monitor-id=\"91098\">secure your system<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview The cybersecurity world has yet again been hit with a new vulnerability, CVE-2025-9780, that affects TOTOLINK A702R 4.0.0-B20211108.1423. This vulnerability is significant due to the potential system compromise or data leakage that could occur if exploited. It&#8217;s important for users and administrators of this software to understand the depth of this issue as it [&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-71990","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\/71990","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=71990"}],"version-history":[{"count":11,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/71990\/revisions"}],"predecessor-version":[{"id":84117,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/71990\/revisions\/84117"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=71990"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=71990"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=71990"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=71990"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=71990"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=71990"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=71990"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=71990"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=71990"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}