{"id":34257,"date":"2025-05-02T22:48:14","date_gmt":"2025-05-02T22:48:14","guid":{"rendered":""},"modified":"2025-05-11T06:20:27","modified_gmt":"2025-05-11T06:20:27","slug":"cve-2025-3993-critical-buffer-overflow-vulnerability-in-totolink-n150rt","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-3993-critical-buffer-overflow-vulnerability-in-totolink-n150rt\/","title":{"rendered":"CVE-2025-3993: Critical Buffer Overflow Vulnerability in TOTOLINK N150RT<\/strong>"},"content":{"rendered":"

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

The world of cybersecurity is in a constant state of flux, with new vulnerabilities discovered and old vulnerabilities patched on a regular basis. One such recently discovered vulnerability, CVE-2025-3993, poses a significant threat to users of the TOTOLINK N150RT 3.4.0-B20190525. This vulnerability is classified as critical<\/a> and could potentially lead to system compromise or data leakage if exploited. The issue affects unknown processing of the file \/boafrm\/formWsc, and the manipulation of the argument submit-url leads to buffer overflow<\/a>. Given the severity of this vulnerability<\/a>, it is essential that affected users take immediate action to mitigate its risks.<\/p>\n

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

CVE ID: CVE-2025-3993
\nSeverity: Critical, CVSS Score 8.8
\nAttack Vector: Network
\nPrivileges Required: None
\nUser Interaction: None
\nImpact: Potential system<\/a> compromise or data leakage<\/p>\n

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

Product | Affected Versions<\/p>\n

TOTOLINK N150RT<\/a> | 3.4.0-B20190525<\/p>\n

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

The vulnerability exists due to a buffer overflow<\/a> issue in the processing of the \/boafrm\/formWsc file. It is triggered when an oversized, specially crafted ‘submit-url’ argument is supplied, which the software fails to handle correctly. This can lead to memory corruption, causing erratic program behavior, crashes, or potentially, code execution<\/a>. The attack can be initiated remotely<\/a> and does not require any user interaction.<\/p>\n

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

Here is a conceptual example of how the exploit might be used. Please note that this is a simplified version, meant for illustrative purposes.<\/p>\n

POST \/boafrm\/formWsc HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/x-www-form-urlencoded\nsubmit-url=[malicious_payload]<\/code><\/pre>\n
In the above example, the ‘malicious_payload’ is a string that exceeds the expected length, which causes the buffer overflow<\/a>.<\/p>\n
Mitigation Guidance<\/strong><\/p>\n
Users affected by this vulnerability<\/a> are strongly advised to apply the vendor patch as soon as possible. As a temporary mitigation measure, a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can be used to monitor and block any suspicious requests targeting the vulnerable<\/a> endpoint.
\nIt’s important to note that while using a WAF\/IDS can help to protect against known attack patterns, it is not a permanent solution and cannot guarantee full protection against potential<\/a> exploits. As such, the application of vendor patches should not be delayed.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview The world of cybersecurity is in a constant state of flux, with new vulnerabilities discovered and old vulnerabilities patched on a regular basis. One such recently discovered vulnerability, CVE-2025-3993, poses a significant threat to users of the TOTOLINK N150RT 3.4.0-B20190525. This vulnerability is classified as critical and could potentially lead to system compromise or […]<\/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-34257","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