{"id":51194,"date":"2025-06-11T23:29:30","date_gmt":"2025-06-11T23:29:30","guid":{"rendered":""},"modified":"2025-06-18T23:41:43","modified_gmt":"2025-06-19T05:41:43","slug":"cve-2025-5672-critical-buffer-overflow-vulnerability-in-totolink-n302r-plus","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-5672-critical-buffer-overflow-vulnerability-in-totolink-n302r-plus\/","title":{"rendered":"CVE-2025-5672: Critical Buffer Overflow Vulnerability in TOTOLINK N302R Plus<\/strong>"},"content":{"rendered":"

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

The cybersecurity community is currently dealing with a critical vulnerability in TOTOLINK N302R Plus, an issue that potentially puts countless systems at risk. Identified as CVE-2025-5672, this vulnerability resides in an unknown functionality of the file \/boafrm\/formFilter of the component HTTP POST Request Handler. It is especially concerning due to its high severity<\/a> and the fact that it can be exploited remotely, making it a significant threat to both businesses and individuals using the affected product.
\nThe vulnerability is a buffer overflow<\/a>, a common but severe type of security flaw that can lead to system compromise or data leakage. This vulnerability is particularly worrisome as the exploit has been disclosed to the public and may be actively used by malicious actors.<\/p>\n

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

CVE ID: CVE-2025-5672
\nSeverity: Critical, CVSS score 8.8
\nAttack Vector: Remote
\nPrivileges Required: None
\nUser Interaction: None
\nImpact: Potential system compromise and data<\/a> leakage<\/p>\n

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

Product | Affected Versions<\/p>\n

TOTOLINK N302R Plus<\/a> | Versions up to 3.4.0-B20201028<\/p>\n

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

The exploit works by manipulating the ‘url’ argument in the HTTP POST Request<\/a> Handler. This leads to a buffer<\/a> overflow, a situation where more data is put into a buffer than it can handle. This can cause the excess data to overflow into adjacent memory spaces, potentially leading to unauthorized access<\/a> to information or system control.<\/p>\n

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

Below is a conceptual example of how the vulnerability might be exploited. This is a hypothesized HTTP request that causes the buffer overflow<\/a>.<\/p>\n

POST \/boafrm\/formFilter HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/json\n{ \"url\": \"http:\/\/example.com\/[...excessive number of characters...]\" }<\/code><\/pre>\n
In this example, the ‘url’ argument is filled with an excessive number of characters, causing a buffer overflow<\/a> in the HTTP POST Request Handler.<\/p>\n
Mitigation<\/strong><\/p>\n
To mitigate this vulnerability, users of the affected versions of TOTOLINK N302R Plus are encouraged to apply the vendor patch. If this is not immediately possible, using a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) can serve as temporary mitigation. However, these only provide temporary protection and do not address the root cause of the vulnerability<\/a>, so applying the vendor patch should be prioritized.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview The cybersecurity community is currently dealing with a critical vulnerability in TOTOLINK N302R Plus, an issue that potentially puts countless systems at risk. Identified as CVE-2025-5672, this vulnerability resides in an unknown functionality of the file \/boafrm\/formFilter of the component HTTP POST Request Handler. It is especially concerning due to its high severity and […]<\/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-51194","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