{"id":55494,"date":"2025-06-27T16:15:07","date_gmt":"2025-06-27T16:15:07","guid":{"rendered":""},"modified":"2025-09-08T04:18:52","modified_gmt":"2025-09-08T10:18:52","slug":"cve-2025-6368-critical-stack-based-buffer-overflow-vulnerability-in-d-link-dir-619l","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-6368-critical-stack-based-buffer-overflow-vulnerability-in-d-link-dir-619l\/","title":{"rendered":"CVE-2025-6368: Critical stack-based buffer overflow vulnerability in D-Link DIR-619L<\/strong>"},"content":{"rendered":"

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

The world of cybersecurity is fraught with constant threats to data security and system integrity. One such vulnerability, CVE-2025-6368, has been found in D-Link DIR-619L 2.06B01, posing a significant risk to systems still utilizing this unsupported product. This vulnerability is particularly concerning, as it has a high CVSS Severity Score of 8.8 and the potential for system<\/a> compromise or data leakage. With the exploit details already disclosed to the public, systems running the affected software are at an increased risk<\/a> of being targeted.<\/p>\n

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

CVE ID: CVE-2025-6368
\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

D-Link DIR-619L | 2.06B01<\/a><\/p>\n

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

The vulnerability arises from an issue in the formSetEmail function<\/a> of the \/goform\/formSetEmail file. The manipulation of the argument curTime\/config.smtp_email_subject results in a stack-based buffer overflow<\/a>. This kind of overflow<\/a> occurs when a program writes more data to a buffer located on the stack than what is actually allocated for that buffer. This excess data then overflows into adjacent memory<\/a> locations, overwriting the information there. This can lead to erratic program behavior, crashes, and in some cases, the execution of arbitrary code<\/a>.<\/p>\n

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

Here is a conceptual example of how an attack could be initiated remotely<\/a>. Assuming the attacker knows the vulnerable endpoint, they could send a malicious HTTP POST request<\/a> similar to the following:<\/p>\n

POST \/goform\/formSetEmail HTTP\/1.1\nHost: vulnerable-device.example.com\nContent-Type: application\/x-www-form-urlencoded\ncurTime=config.smtp_email_subject&value=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA...<\/code><\/pre>\n
In this example, the “value” field is filled with a long string of “A” characters, which could cause a stack-based buffer overflow in the vulnerable<\/a> system.<\/p>\n
Mitigation Guidance<\/strong><\/p>\n
Given that the affected product is no longer supported by the vendor, the ideal solution of applying a vendor patch is not available. As a temporary mitigation measure, users can implement a Web Application Firewall (WAF) or Intrusion Detection System (IDS) to filter out malicious requests that could exploit this vulnerability<\/a>. Long-term, users should consider upgrading to a supported version or alternative product to maintain a secure environment.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview The world of cybersecurity is fraught with constant threats to data security and system integrity. One such vulnerability, CVE-2025-6368, has been found in D-Link DIR-619L 2.06B01, posing a significant risk to systems still utilizing this unsupported product. This vulnerability is particularly concerning, as it has a high CVSS Severity Score of 8.8 and 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-55494","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