{"id":65455,"date":"2025-08-29T06:53:34","date_gmt":"2025-08-29T06:53:34","guid":{"rendered":""},"modified":"2025-09-07T11:38:12","modified_gmt":"2025-09-07T17:38:12","slug":"cve-2025-9249-stack-based-buffer-overflow-vulnerability-in-linksys-range-extenders","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-9249-stack-based-buffer-overflow-vulnerability-in-linksys-range-extenders\/","title":{"rendered":"CVE-2025-9249: Stack-Based Buffer Overflow Vulnerability in Linksys Range Extenders<\/strong>"},"content":{"rendered":"

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

In this blog post, we delve into a critical vulnerability identified in several Linksys range extenders, specifically the RE6250, RE6300, RE6350, RE6500, RE7000, and RE9000 models. These models are widely used to extend the range of WiFi networks in homes and businesses, making this vulnerability a pressing concern. It has the potential to compromise systems<\/a> or result in data leakage, impacting privacy and security on a large scale.
\nThis vulnerability, designated as CVE-2025-9249, is particularly dangerous due to its remote exploitability and potential<\/a> for system-wide damage. Despite early notification to the vendor, there has been no response or remedy, which underscores the critical importance of understanding this vulnerability<\/a> and taking steps to mitigate its impact.<\/p>\n

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

CVE ID: CVE-2025-9249
\nSeverity: High (8.8 CVSS Score)
\nAttack Vector: Network
\nPrivileges Required: None
\nUser Interaction: None
\nImpact: Potential system compromise or data<\/a> leakage<\/p>\n

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

Product | Affected Versions<\/p>\n

Linksys RE6250 | 1.0.013.001
\nLinksys RE6300 | 1.0.04.001
\nLinksys RE6350 | 1.0.04.002
\nLinksys RE6500 | 1.1.05.003
\nLinksys RE7000 | 1.2.07.001
\nLinksys RE9000 | 1.2.07.001<\/p>\n

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

The vulnerability resides in the DHCPReserveAddGroup function of the \/goform\/DHCPReserveAddGroup file<\/a>. The function mishandles the manipulation of the argument enable_group\/name_group\/ip_group\/mac_group, leading to a stack-based buffer overflow<\/a>. This can be exploited remotely by a malicious actor who sends specially crafted data to overflow<\/a> the buffer, leading to erratic program behavior or even system crash.<\/p>\n

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

A conceptual representation of how the vulnerability might be exploited is provided below:<\/p>\n

POST \/goform\/DHCPReserveAddGroup HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/x-www-form-urlencoded\nenable_group=1&name_group=Test&ip_group=192.168.1.1&mac_group=A1:B2:C3:D4:E5:F6&extra_data=...overflown_data...<\/code><\/pre>\n
In this example, the `extra_data` parameter contains the overflow data that exploits the buffer overflow vulnerability<\/a>. Please note that this is a conceptual example and real-world exploits may vary based on specific conditions and the attacker’s intent.<\/p>\n
Countermeasures and Mitigation<\/strong><\/p>\n
As of the time of writing, the vendor has not released any patch or update to address this vulnerability<\/a>. As a temporary measure, users are advised to use a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) to detect and prevent potential exploits<\/a>. As always, it is recommended to keep all software and hardware up-to-date and to maintain proper security<\/a> hygiene.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview In this blog post, we delve into a critical vulnerability identified in several Linksys range extenders, specifically the RE6250, RE6300, RE6350, RE6500, RE7000, and RE9000 models. These models are widely used to extend the range of WiFi networks in homes and businesses, making this vulnerability a pressing concern. It has the potential to compromise […]<\/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-65455","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