{"id":67620,"date":"2025-08-30T00:59:48","date_gmt":"2025-08-30T00:59:48","guid":{"rendered":""},"modified":"2025-10-02T02:37:03","modified_gmt":"2025-10-02T08:37:03","slug":"cve-2025-29514-high-severity-access-control-vulnerability-in-d-link-dsl-7740c-router","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-29514-high-severity-access-control-vulnerability-in-d-link-dsl-7740c-router\/","title":{"rendered":"<strong>CVE-2025-29514: High Severity Access Control Vulnerability in D-Link DSL-7740C Router<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>The cybersecurity landscape is ever-changing, and vulnerabilities in hardware and software systems frequently emerge. One such high-severity vulnerability, recently identified as CVE-2025-29514, affects D-Link DSL-7740C routers. This <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-51387-code-injection-vulnerability-in-gitkraken-desktop-due-to-misconfigured-electron-fuses\/\"  data-wpil-monitor-id=\"75002\">vulnerability arises due<\/a> to incorrect access control in the device&#8217;s config.xgi function with firmware DSL7740C.V6.TR069.20211230. Given the widespread use of these routers in both residential and business settings, this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-21445-memory-corruption-vulnerability-in-virtual-machines-leads-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"75003\">vulnerability poses a significant threat to user data and system<\/a> integrity.<br \/>\nThe consequences of this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-8011-high-severity-heap-corruption-vulnerability-in-google-chrome-v8\/\"  data-wpil-monitor-id=\"75622\">vulnerability are severe<\/a>. A successful exploit could <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-27043-memory-corruption-vulnerability-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"75320\">lead to a total system<\/a> compromise or data leakage, giving attackers unauthorized access to sensitive information and allowing them to alter system configurations. As a cybersecurity expert, I believe it is crucial to understand, detect, and mitigate such <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-36594-critical-authentication-bypass-vulnerability-in-dell-powerprotect-data-domain\/\"  data-wpil-monitor-id=\"76768\">vulnerabilities to ensure digital security and data<\/a> privacy.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-29514<br \/>\nSeverity: High (9.8 CVSS Score)<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-50160-heap-based-buffer-overflow-in-windows-rras-posing-system-compromise-risk\/\"  data-wpil-monitor-id=\"78515\">System compromise<\/a> and data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-2058996581\" 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>D-Link DSL-7740C | Firmware DSL7740C.V6.TR069.20211230<\/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=\"80380\">vulnerability exists in the config.xgi function<\/a> of the D-Link DSL-7740C router. This function is responsible for handling the device&#8217;s configuration settings. However, incorrect access control allows attackers to send a specially crafted web request, exploiting the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49693-a-deep-dive-into-double-free-vulnerability-in-microsoft-brokering-file-system\/\"  data-wpil-monitor-id=\"75319\">vulnerability to download the device&#8217;s configuration file<\/a>. This exposes sensitive information, such as network settings and user credentials, and <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-40741-stack-based-overflow-vulnerability-in-solid-edge-se2025-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"75754\">potentially allows for further system<\/a> exploitation.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-3840981777\" 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 <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-52797-critical-cross-site-request-forgery-csrf-vulnerability-in-josepsitjar-storymap\/\"  data-wpil-monitor-id=\"79387\">vulnerability can be exploited with a simple HTTP GET request<\/a>. Here is a<br \/>\n<strong>conceptual<\/strong><br \/>\n example:<\/p>\n<pre><code class=\"\" data-line=\"\">GET \/config.xgi HTTP\/1.1\nHost: target-router-ip\nUser-Agent: MaliciousUser<\/code><\/pre>\n<p>This request, when sent to the router&#8217;s IP address, could allow an attacker to download the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-55747-configuration-file-exposure-in-xwiki-platform\/\"  data-wpil-monitor-id=\"87410\">configuration file<\/a>.<\/p>\n<p><strong>Mitigation and Prevention<\/strong><\/p>\n<p>Given the severity of CVE-2025-29514, it is recommended to apply the vendor&#8217;s patch as soon as it becomes available. Until then, users can mitigate the risk by using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) to monitor and block suspicious traffic.<br \/>\nRemember, staying <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-4044-critical-information-disclosure-vulnerability-in-lexmark-printer-drivers\/\"  data-wpil-monitor-id=\"82578\">informed about vulnerabilities<\/a> and consistently practicing good cybersecurity hygiene are key to protecting your systems and data. Regular system updates and the use of robust, multi-layered <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-54887-significant-security-vulnerability-in-jwe-ruby-encryption-implementation\/\"  data-wpil-monitor-id=\"82681\">security systems can significantly<\/a> reduce the likelihood of a successful attack.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview The cybersecurity landscape is ever-changing, and vulnerabilities in hardware and software systems frequently emerge. One such high-severity vulnerability, recently identified as CVE-2025-29514, affects D-Link DSL-7740C routers. This vulnerability arises due to incorrect access control in the device&#8217;s config.xgi function with firmware DSL7740C.V6.TR069.20211230. Given the widespread use of these routers in both residential and business [&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":[],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-67620","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/67620","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=67620"}],"version-history":[{"count":11,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/67620\/revisions"}],"predecessor-version":[{"id":80242,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/67620\/revisions\/80242"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=67620"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=67620"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=67620"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=67620"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=67620"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=67620"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=67620"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=67620"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=67620"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}