{"id":54015,"date":"2025-06-22T12:16:15","date_gmt":"2025-06-22T12:16:15","guid":{"rendered":""},"modified":"2025-09-10T18:12:43","modified_gmt":"2025-09-11T00:12:43","slug":"cve-2025-6143-critical-buffer-overflow-vulnerability-in-totolink-ex1200t","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-6143-critical-buffer-overflow-vulnerability-in-totolink-ex1200t\/","title":{"rendered":"CVE-2025-6143: Critical Buffer Overflow Vulnerability in TOTOLINK EX1200T<\/strong>"},"content":{"rendered":"

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

A critical security vulnerability, identified as CVE-2025-6143, has been discovered in TOTOLINK EX1200T version 4.1.2cu.5232_B20210713. This vulnerability poses a significant risk to any organization that uses the affected device since it could potentially lead to system compromise or data leakage. The vulnerability affects an unknown function of the file<\/a> \/boafrm\/formNtp of the HTTP POST Request Handler component and can be exploited remotely.<\/p>\n

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

CVE ID: CVE-2025-6143
\nSeverity: Critical (8.8 CVSS score)
\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 EX1200T<\/a> | 4.1.2cu.5232_B20210713<\/p>\n

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

The vulnerability stems from the manipulation of the ‘submit-url’ argument which leads to buffer<\/a> overflow. An attacker can send a specially crafted HTTP POST request to the vulnerable<\/a> component. When this request is processed, the buffer overflow<\/a> can occur. This could enable an attacker to execute arbitrary code<\/a> on the system or cause the system to crash, resulting in a denial of service.<\/p>\n

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

Below is a conceptual example of how the vulnerability might be exploited. This example represents a malicious HTTP POST request targeting the vulnerable<\/a> endpoint.<\/p>\n

POST \/boafrm\/formNtp HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/x-www-form-urlencoded\nsubmit-url=malicious_payload<\/code><\/pre>\n
In this example, ‘malicious_payload’ is a placeholder for the actual malicious code or data that would cause the buffer overflow<\/a>.
\nRemember, this is a conceptual example only and may not represent the exact method used to exploit this vulnerability<\/a> in real-world scenarios.<\/p>\n
Mitigation<\/strong><\/p>\n
Users of the affected TOTOLINK<\/a> EX1200T version are urged to apply the latest vendor patch as soon as possible to fix this vulnerability. In the interim, as a temporary mitigation, users can deploy a Web Application Firewall (WAF) or Intrusion Detection System (IDS) to detect and prevent attempts to exploit this vulnerability<\/a>. However, this should not be considered a long-term solution and should only be used until the vendor patch can be applied.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview A critical security vulnerability, identified as CVE-2025-6143, has been discovered in TOTOLINK EX1200T version 4.1.2cu.5232_B20210713. This vulnerability poses a significant risk to any organization that uses the affected device since it could potentially lead to system compromise or data leakage. The vulnerability affects an unknown function of the file \/boafrm\/formNtp of the HTTP POST […]<\/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":[86,87],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-54015","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-buffer-overflow","attack_vector-dos"],"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