{"id":69005,"date":"2025-08-31T11:10:45","date_gmt":"2025-08-31T11:10:45","guid":{"rendered":""},"modified":"2025-11-02T02:09:47","modified_gmt":"2025-11-02T08:09:47","slug":"cve-2025-9251-high-risk-buffer-overflow-vulnerability-in-linksys-wi-fi-extenders","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-9251-high-risk-buffer-overflow-vulnerability-in-linksys-wi-fi-extenders\/","title":{"rendered":"CVE-2025-9251: High-Risk Buffer Overflow Vulnerability in Linksys Wi-Fi Extenders<\/strong>"},"content":{"rendered":"

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

In the ever-evolving landscape of cybersecurity, a new high-risk vulnerability, CVE-2025-9251, has been discovered in a range of Linksys Wi-Fi extenders. This vulnerability impacts several Linksys models including RE6250, RE6300, RE6350, RE6500, RE7000, and RE9000. It has been identified that this security flaw can be triggered remotely, thus raising a critical concern for users and network administrators<\/a>. Given its high CVSS severity score, it is crucial to understand the extent of this vulnerability, the systems it affects, and the potential ways to mitigate this exploit<\/a>.<\/p>\n

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

CVE ID: CVE-2025-9251
\nSeverity: High (CVSS: 8.8)
\nAttack Vector: Remote, Network Access<\/a>
\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

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 | 1.0.04.002<\/p>\n

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

The security flaw<\/a> resides in the function ‘sta_wps_pin’ of the file ‘\/goform\/sta_wps_pin. This function, when manipulated with an argument ‘ssid’, results in a stack-based buffer overflow<\/a>. A buffer overflow is a type of software vulnerability<\/a> that exists when the data written to a buffer exceeds its capacity, thus allowing an attacker to overwrite adjacent memory locations.<\/p>\n

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

The following is a conceptual example of how the vulnerability might be exploited. Please note that this is a hypothetical scenario and does not represent a real exploit.<\/p>\n

POST \/goform\/sta_wps_pin HTTP\/1.1\nHost: vulnerablelinksys.com\nContent-Type: application\/json\n{ \"Ssid\": \"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA...\" }<\/code><\/pre>\n
In the above example, the Ssid parameter is filled with a large number of ‘A’ characters, thereby causing a buffer overflow<\/a> in the target system.<\/p>\n
Mitigation<\/strong><\/p>\n
While it is evident that the vendor has yet to respond to this disclosure, it is strongly recommended that users apply vendor-provided patches as soon as they become available. In the meantime, users can implement a Web Application Firewall (WAF) or Intrusion Detection System (IDS) as temporary mitigation. Regular monitoring of network traffic for any anomalies can also aid in detecting any potential attacks.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview In the ever-evolving landscape of cybersecurity, a new high-risk vulnerability, CVE-2025-9251, has been discovered in a range of Linksys Wi-Fi extenders. This vulnerability impacts several Linksys models including RE6250, RE6300, RE6350, RE6500, RE7000, and RE9000. It has been identified that this security flaw can be triggered remotely, thus raising a critical concern for users […]<\/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-69005","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