{"id":53824,"date":"2025-06-20T18:56:14","date_gmt":"2025-06-20T18:56:14","guid":{"rendered":""},"modified":"2025-09-16T07:08:57","modified_gmt":"2025-09-16T13:08:57","slug":"cve-2025-6114-critical-vulnerability-in-d-link-dir-619l-leading-to-stack-based-buffer-overflow","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-6114-critical-vulnerability-in-d-link-dir-619l-leading-to-stack-based-buffer-overflow\/","title":{"rendered":"CVE-2025-6114: Critical Vulnerability in D-Link DIR-619L Leading to Stack-based Buffer Overflow<\/strong>"},"content":{"rendered":"

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

The cybersecurity landscape is fraught with vulnerabilities, and D-Link DIR-619L version 2.06B01 is the latest product to fall prey to a significant one. Classified as critical with a Common Vulnerability Scoring System (CVSS) score of 8.8, this vulnerability specifically impacts the function form_portforwarding of the file \/goform\/form_portforwarding. The vulnerability arises from a manipulation of certain arguments, which results in a stack-based buffer overflow<\/a>.
\nThis vulnerability matters because it can be exploited remotely<\/a> and has been publicly disclosed, meaning malicious actors may have the tools required to launch an attack. Moreover, it affects products that are no longer supported by the maintainer, making it a potential ticking time bomb for unsuspecting users.<\/p>\n

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

CVE ID: CVE-2025-6114
\nSeverity: Critical, CVSS Score 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

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

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

The vulnerability is a result of insufficient input validation<\/a> in the form_portforwarding function of the file \/goform\/form_portforwarding. The manipulation of the argument ingress_name_%d\/sched_name_%d\/name_%d triggers a stack-based buffer overflow<\/a>. A buffer overflow<\/a> occurs when more data is written to a buffer than it can handle, overriding adjacent memory locations. This can result in unpredictable behavior, including system crashes, incorrect data, or code execution<\/a>.<\/p>\n

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

Consider this conceptual example of how the vulnerability might be exploited using an HTTP POST request<\/a>. An attacker would send a crafted request with a malicious payload designed to overflow the buffer<\/a> and potentially execute arbitrary code.<\/p>\n

POST \/goform\/form_portforwarding HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/x-www-form-urlencoded\ningress_name_1=sched_name_1=name_1=A*50000<\/code><\/pre>\n
In the example above, ‘A*50000’ represents a string of 50,000 ‘A’ characters, which could exceed the buffer’s capacity and trigger the overflow<\/a>.
\nPlease note that this is a conceptual example and not actual exploit code. The actual exploit would depend on various factors, including the specific configuration of the targeted system<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview The cybersecurity landscape is fraught with vulnerabilities, and D-Link DIR-619L version 2.06B01 is the latest product to fall prey to a significant one. Classified as critical with a Common Vulnerability Scoring System (CVSS) score of 8.8, this vulnerability specifically impacts the function form_portforwarding of the file \/goform\/form_portforwarding. The vulnerability arises from a manipulation of […]<\/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-53824","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