{"id":55773,"date":"2025-06-28T12:22:41","date_gmt":"2025-06-28T12:22:41","guid":{"rendered":""},"modified":"2025-09-16T07:08:57","modified_gmt":"2025-09-16T13:08:57","slug":"cve-2025-6486-remote-buffer-overflow-vulnerability-in-totolink-a3002r","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-6486-remote-buffer-overflow-vulnerability-in-totolink-a3002r\/","title":{"rendered":"CVE-2025-6486: Remote Buffer Overflow Vulnerability in TOTOLINK A3002R<\/strong>"},"content":{"rendered":"

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

Widely used in both homes and businesses, TOTOLINK A3002R routers have become a critical part of the digital infrastructure. However, a recently discovered vulnerability, designated as CVE-2025-6486, has cast a shadow over their security. This flaw is deemed critical due to its potential for remote<\/a> exploitation, with the attacker requiring no privileges or user interaction to compromise the system. This vulnerability, if left unaddressed, could lead to severe consequences, including data breaches and severe disruptions to services<\/a>.<\/p>\n

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

CVE ID: CVE-2025-6486
\nSeverity: Critical (CVSS 8.8)
\nAttack Vector: Remote
\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 A3002R | 1.1.1-B20200824.0128<\/p>\n

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

The vulnerability lies in the function formWlanMultipleAP of the file<\/a> \/boafrm\/formWlanMultipleAP in TOTOLINK A3002R version 1.1.1-B20200824.0128. It arises from improper handling of the ‘submit-url’ argument, leading to a stack-based buffer overflow<\/a>. This allows an attacker to remotely execute arbitrary code<\/a> on the target system without the need for any user interaction or privileges, leading to potential system compromise or data leakage.<\/p>\n

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

Below is a conceptual example of how the vulnerability might be exploited. The attacker sends a specially crafted HTTP POST request to the vulnerable<\/a> endpoint, with a malicious payload in the ‘submit-url’ argument.<\/p>\n

POST \/boafrm\/formWlanMultipleAP HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/x-www-form-urlencoded\nsubmit-url=<\/code><\/pre>\n
In this scenario, “ is a carefully designed string that, when processed by the vulnerable function, triggers a buffer overflow<\/a>, allowing the attacker to execute arbitrary code on the target system.
\nPlease note that this is a simplified example for illustrative purposes and may not directly apply to the actual exploitation of this vulnerability<\/a>. The actual exploit may require intricate knowledge of the target system’s configuration<\/a>, memory layout, and other factors that are beyond the scope of this article.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview Widely used in both homes and businesses, TOTOLINK A3002R routers have become a critical part of the digital infrastructure. However, a recently discovered vulnerability, designated as CVE-2025-6486, has cast a shadow over their security. This flaw is deemed critical due to its potential for remote exploitation, with the attacker requiring no privileges or user […]<\/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-55773","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