{"id":38299,"date":"2025-05-15T06:56:18","date_gmt":"2025-05-15T06:56:18","guid":{"rendered":""},"modified":"2025-06-01T11:18:04","modified_gmt":"2025-06-01T17:18:04","slug":"cve-2025-45845-authenticated-stack-overflow-vulnerability-in-totolink-nr1800x","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-45845-authenticated-stack-overflow-vulnerability-in-totolink-nr1800x\/","title":{"rendered":"<strong>CVE-2025-45845: Authenticated Stack Overflow Vulnerability in TOTOLINK NR1800X<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>CVE-2025-45845 is a critical cybersecurity vulnerability that has been identified in TOTOLINK NR1800X V9.1.0u.6681_B20230703. This vulnerability is primarily linked with an authenticated stack overflow, which can be triggered via the &#8216;ssid5g&#8217; parameter in the &#8216;setWiFiEasyGuestCfg&#8217; function. This vulnerability is of significant concern as it could <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-4050-heap-corruption-in-google-chrome-devtools-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"43087\">potentially expose the system<\/a> to compromise, or lead to data leakage, causing significant harm to the users of the affected devices.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-45845<br \/>\nSeverity: High (CVSS Score 8.8)<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: Low (<a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-48340-critical-csrf-vulnerability-in-danny-vink-user-profile-meta-manager-allows-privilege-escalation\/\"  data-wpil-monitor-id=\"52908\">user privileges<\/a> required)<br \/>\nUser Interaction: Required<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-49126-critical-vulnerability-in-solid-edge-se2023-allows-for-potential-system-compromise\/\"  data-wpil-monitor-id=\"43497\">Potential system<\/a> compromise and data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-3850257661\" 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>TOTOLINK NR1800X | V9.1.0u.6681_B20230703<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-1909-authentication-bypass-vulnerability-in-buddyboss-platform-pro-plugin-for-wordpress\/\"  data-wpil-monitor-id=\"43200\">vulnerability is exploited when an authenticated<\/a> user sends a malformed request to the &#8216;setWiFiEasyGuestCfg&#8217; function, containing an oversized &#8216;ssid5g&#8217; parameter. This triggers a stack <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-38583-stack-based-buffer-overflow-vulnerability-in-gtkwave-3-3-115\/\"  data-wpil-monitor-id=\"43046\">buffer overflow<\/a>, which can lead to execution of arbitrary code or cause the system to crash, potentially leading to information disclosure, system compromise, or denial of service.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-701226003\" 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>The following conceptual HTTP <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-47462-cross-site-request-forgery-vulnerability-in-ohidul-islam-challan-leading-to-privilege-escalation\/\"  data-wpil-monitor-id=\"43671\">request illustrates how the vulnerability<\/a> might be exploited:<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/setWiFiEasyGuestCfg HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/x-www-form-urlencoded\nAuthorization: Basic [Base64 credentials]\nssid5g={ &quot;malicious_payload&quot;: &quot;A&quot;*1024 }<\/code><\/pre>\n<p>In this example, a malicious user sends an authenticated POST request to the &#8216;setWiFiEasyGuestCfg&#8217; function, with an oversized &#8216;ssid5g&#8217; parameter, causing a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-49129-stack-overflow-vulnerability-in-solid-edge-se2023-allows-potential-system-compromise\/\"  data-wpil-monitor-id=\"43496\">stack overflow<\/a>.<\/p>\n<p><strong>Recommendations<\/strong><\/p>\n<p>To mitigate this vulnerability, users are advised to apply the vendor patch as soon as it becomes available. In the meanwhile, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can help prevent exploitation of the vulnerability. Furthermore, users should also consider limiting the exposure of the affected <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-20698-windows-kernel-elevation-of-privilege-vulnerability-a-threat-to-system-security\/\"  data-wpil-monitor-id=\"47228\">systems<\/a> to the internet and restrict the privileges of users who have access to these systems.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview CVE-2025-45845 is a critical cybersecurity vulnerability that has been identified in TOTOLINK NR1800X V9.1.0u.6681_B20230703. This vulnerability is primarily linked with an authenticated stack overflow, which can be triggered via the &#8216;ssid5g&#8217; parameter in the &#8216;setWiFiEasyGuestCfg&#8217; function. This vulnerability is of significant concern as it could potentially expose the system to compromise, or lead to [&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":[86,87],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-38299","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-buffer-overflow","attack_vector-dos"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/38299","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=38299"}],"version-history":[{"count":7,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/38299\/revisions"}],"predecessor-version":[{"id":47379,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/38299\/revisions\/47379"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=38299"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=38299"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=38299"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=38299"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=38299"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=38299"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=38299"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=38299"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=38299"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}