{"id":51218,"date":"2025-06-12T18:36:30","date_gmt":"2025-06-12T18:36:30","guid":{"rendered":""},"modified":"2025-10-11T04:29:34","modified_gmt":"2025-10-11T10:29:34","slug":"cve-2025-5736-critical-buffer-overflow-vulnerability-in-totolink-x15","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-5736-critical-buffer-overflow-vulnerability-in-totolink-x15\/","title":{"rendered":"CVE-2025-5736: Critical Buffer Overflow Vulnerability in TOTOLINK X15<\/strong>"},"content":{"rendered":"

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

A critical vulnerability has been discovered in TOTOLINK X15 1.0.0-B20230714.1105, a widely used router firmware version. This vulnerability, classified as CVE-2025-5736, is of significant concern as it allows the remote execution of buffer overflow attacks. Buffer overflow<\/a> attacks can lead to severe consequences, including system compromise and potential data leakage, if not addressed promptly. Therefore, understanding this vulnerability, its effects, and how to mitigate it is crucial for all users and administrators of TOTOLINK X15<\/a>.<\/p>\n

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

CVE ID: CVE-2025-5736
\nSeverity: Critical (8.8 CVSS Score)
\nAttack Vector: Network
\nPrivileges Required: None
\nUser Interaction: None
\nImpact: Potential system<\/a> compromise and data leakage<\/p>\n

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

Product | Affected Versions<\/p>\n

TOTOLINK X15<\/a> | 1.0.0-B20230714.1105<\/p>\n

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

The vulnerability resides in an unknown function of the file<\/a> \/boafrm\/formNtp, part of the HTTP POST Request Handler. Specifically, the manipulation of the ‘submit-url’ argument can trigger a buffer overflow<\/a>. In a buffer overflow<\/a> attack, a hacker sends more data to a buffer than it can handle, which overflows the buffer’s boundary and overwrites adjacent memory. This can lead to unexpected<\/a> behavior, including erroneous data, a crash, or a breach of system security.<\/p>\n

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

The following is a conceptual example demonstrating how this vulnerability could be exploited. The attacker sends an HTTP POST request to the target with an oversized ‘submit-url’ argument, causing the buffer overflow<\/a>:<\/p>\n

POST \/boafrm\/formNtp HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/x-www-form-urlencoded\nsubmit-url=http:\/\/[oversized_data]<\/code><\/pre>\n
Mitigation<\/strong><\/p>\n
Users and administrators of TOTOLINK X15 1.0.0-B20230714.1105 are advised to apply the vendor patch as soon as possible to mitigate this critical vulnerability<\/a>. If the patch cannot be applied immediately, the use of a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as a temporary mitigation measure. These systems can help detect and block attacks<\/a> that attempt to exploit this vulnerability.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview A critical vulnerability has been discovered in TOTOLINK X15 1.0.0-B20230714.1105, a widely used router firmware version. This vulnerability, classified as CVE-2025-5736, is of significant concern as it allows the remote execution of buffer overflow attacks. Buffer overflow attacks can lead to severe consequences, including system compromise and potential data leakage, if not addressed promptly. […]<\/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":[86],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-51218","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-buffer-overflow"],"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