{"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":"CVE-2025-29514: High Severity Access Control Vulnerability in D-Link DSL-7740C Router<\/strong>"},"content":{"rendered":"

Overview<\/strong><\/p>\n

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<\/a> to incorrect access control in the device’s config.xgi function with firmware DSL7740C.V6.TR069.20211230. Given the widespread use of these routers in both residential and business settings, this vulnerability poses a significant threat to user data and system<\/a> integrity.
\nThe consequences of this vulnerability are severe<\/a>. A successful exploit could 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 vulnerabilities to ensure digital security and data<\/a> privacy.<\/p>\n

Vulnerability Summary<\/strong><\/p>\n

CVE ID: CVE-2025-29514
\nSeverity: High (9.8 CVSS Score)
\nAttack Vector: Network
\nPrivileges Required: None
\nUser Interaction: None
\nImpact: System compromise<\/a> and data leakage<\/p>\n

Affected Products<\/strong><\/p>\n

Product | Affected Versions<\/p>\n

D-Link DSL-7740C | Firmware DSL7740C.V6.TR069.20211230<\/p>\n

How the Exploit Works<\/strong><\/p>\n

The vulnerability exists in the config.xgi function<\/a> of the D-Link DSL-7740C router. This function is responsible for handling the device’s configuration settings. However, incorrect access control allows attackers to send a specially crafted web request, exploiting the vulnerability to download the device’s configuration file<\/a>. This exposes sensitive information, such as network settings and user credentials, and potentially allows for further system<\/a> exploitation.<\/p>\n

Conceptual Example Code<\/strong><\/p>\n

The vulnerability can be exploited with a simple HTTP GET request<\/a>. Here is a
\nconceptual<\/strong>
\n example:<\/p>\n

GET \/config.xgi HTTP\/1.1\nHost: target-router-ip\nUser-Agent: MaliciousUser<\/code><\/pre>\n
This request, when sent to the router’s IP address, could allow an attacker to download the configuration file<\/a>.<\/p>\n
Mitigation and Prevention<\/strong><\/p>\n
Given the severity of CVE-2025-29514, it is recommended to apply the vendor’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.
\nRemember, staying 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 security systems can significantly<\/a> reduce the likelihood of a successful attack.<\/p>\n","protected":false},"excerpt":{"rendered":"
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’s config.xgi function with firmware DSL7740C.V6.TR069.20211230. Given the widespread use of these routers in both residential and business […]<\/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,"_monsterinsights_skip_tracking":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":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t