{"id":70734,"date":"2025-09-03T15:38:45","date_gmt":"2025-09-03T15:38:45","guid":{"rendered":""},"modified":"2025-09-29T02:50:20","modified_gmt":"2025-09-29T08:50:20","slug":"cve-2025-9526-stack-based-buffer-overflow-vulnerability-in-linksys-e1700","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-9526-stack-based-buffer-overflow-vulnerability-in-linksys-e1700\/","title":{"rendered":"CVE-2025-9526: Stack-Based Buffer Overflow Vulnerability in Linksys E1700<\/strong>"},"content":{"rendered":"

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

A critical vulnerability, CVE-2025-9526, has been identified in the Linksys E1700 router, version 1.0.0.4.003. This vulnerability allows for a stack-based buffer overflow attack, which could potentially lead to a complete system compromise or data leakage. This issue affects<\/a> a broad range of users, specifically anyone using the affected version of the Linksys E1700 router. Given the role of routers in handling network traffic, the exploitation of this vulnerability could provide attackers with significant control<\/a> over a network, which makes this a matter of high concern.<\/p>\n

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

CVE ID: CVE-2025-9526
\nSeverity: High (8.8 CVSS Score)
\nAttack Vector: Remote
\nPrivileges Required: None
\nUser Interaction: None
\nImpact: Potential system compromise<\/a> and data leakage<\/p>\n

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

Product | Affected Versions<\/p>\n

Linksys E1700<\/a> | 1.0.0.4.003<\/p>\n

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

The vulnerability lies within the ‘setSysAdm’ function of the ‘\/goform\/setSysAdm’ file<\/a>. The issue is caused by improper validation of user-supplied data, which can result in a stack-based buffer overflow<\/a> condition. An attacker may exploit this vulnerability by manipulating the ‘rm_port’ argument to trigger the overflow<\/a>. This can lead to the execution of arbitrary code<\/a> in the context of the affected application, making it possible for an attacker to gain control over the system.<\/p>\n

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

Below is a conceptual example of how the vulnerability might be exploited. In this example, we’re manipulating the ‘rm_port’ argument in an HTTP POST request to the vulnerable<\/a> endpoint:<\/p>\n

POST \/goform\/setSysAdm HTTP\/1.1\nHost: vulnerable-linksys-router\nContent-Type: application\/x-www-form-urlencoded\nrm_port=65537; \/\/This value is larger than expected, triggering the buffer overflow<\/code><\/pre>\n
This code sends a request to the vulnerable endpoint with a larger ‘rm_port’ value than expected, which can trigger the buffer overflow<\/a>. Note that this is a conceptual example; the precise payload would depend on the specific system setup and desired outcome of the attack.<\/p>\n
Mitigation<\/strong><\/p>\n
Users are strongly advised to apply the vendor-supplied patch to fix this vulnerability as soon as possible<\/a>. If the patch is not available, temporary mitigation can be achieved by using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) to detect and block attempts to exploit this vulnerability<\/a>. However, these are not long-term solutions and the patch should be applied as soon as it becomes available.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview A critical vulnerability, CVE-2025-9526, has been identified in the Linksys E1700 router, version 1.0.0.4.003. This vulnerability allows for a stack-based buffer overflow attack, which could potentially lead to a complete system compromise or data leakage. This issue affects a broad range of users, specifically anyone using the affected version of the Linksys E1700 router. […]<\/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-70734","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