{"id":51510,"date":"2025-06-14T03:51:42","date_gmt":"2025-06-14T03:51:42","guid":{"rendered":""},"modified":"2025-09-08T04:18:53","modified_gmt":"2025-09-08T10:18:53","slug":"cve-2025-5793-critical-buffer-overflow-vulnerability-in-totolink-ex1200t-4-1-2cu-5232-b20210713","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-5793-critical-buffer-overflow-vulnerability-in-totolink-ex1200t-4-1-2cu-5232-b20210713\/","title":{"rendered":"CVE-2025-5793: Critical Buffer Overflow Vulnerability in TOTOLINK EX1200T 4.1.2cu.5232_B20210713<\/strong>"},"content":{"rendered":"

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

We are discussing a severe cybersecurity flaw that has cropped up in TOTOLINK’s EX1200T 4.1.2cu.5232_B20210713. This vulnerability, coded as CVE-2025-5793, is considered critical due to its potential to cause system compromise or data leakage, which could have disastrous consequences for affected users. As it affects an unknown function of the file \/boafrm\/formPortFw in the HTTP POST Request Handler component, this vulnerability is of particular concern to anyone using the affected version of TOTOLINK EX1200T<\/a>.<\/p>\n

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

CVE ID: CVE-2025-5793
\nSeverity: Critical (CVSS 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 EX1200T<\/a> | 4.1.2cu.5232_B20210713<\/p>\n

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

The CVE-2025-5793 vulnerability arises from a fault in an unknown function<\/a> of the file \/boafrm\/formPortFw in the HTTP POST Request Handler. This flaw results in a buffer overflow<\/a> when the service_type argument is manipulated. An attacker could use this vulnerability to send a specially crafted HTTP POST request to the affected system, causing the buffer overflow<\/a>. This can lead to potential system<\/a> compromise or data leakage.<\/p>\n

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

Here is a
\nconceptual<\/strong>
\n example of how an attacker might exploit<\/a> the vulnerability:<\/p>\n

POST \/boafrm\/formPortFw HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/x-www-form-urlencoded\nservice_type=OVERFLOWING_VALUE<\/code><\/pre>\n
In the above example, the attacker sends an HTTP POST request<\/a> with a buffer-overflow-inducing value for the service_type argument.<\/p>\n
Mitigation and Remediation<\/strong><\/p>\n
The most effective way to mitigate this vulnerability is by applying the patch provided<\/a> by the vendor. If the patch is not immediately available or cannot be applied in a timely manner, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can offer temporary mitigation. These solutions can be configured to detect and block the specific HTTP POST requests<\/a> associated with this exploit. However, it’s crucial to remember that these are temporary measures, and the vendor’s patch should be applied as soon as feasible to fully resolve the vulnerability.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview We are discussing a severe cybersecurity flaw that has cropped up in TOTOLINK’s EX1200T 4.1.2cu.5232_B20210713. This vulnerability, coded as CVE-2025-5793, is considered critical due to its potential to cause system compromise or data leakage, which could have disastrous consequences for affected users. As it affects an unknown function of the file \/boafrm\/formPortFw in the […]<\/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-51510","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