{"id":59455,"date":"2025-07-17T23:43:28","date_gmt":"2025-07-17T23:43:28","guid":{"rendered":""},"modified":"2025-10-22T19:04:55","modified_gmt":"2025-10-23T01:04:55","slug":"cve-2025-7422-critical-vulnerability-in-tenda-o3v2-1-0-0-12-3880-resulting-in-potential-system-compromise","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-7422-critical-vulnerability-in-tenda-o3v2-1-0-0-12-3880-resulting-in-potential-system-compromise\/","title":{"rendered":"CVE-2025-7422: Critical Vulnerability in Tenda O3V2 1.0.0.12(3880) Resulting in Potential System Compromise<\/strong>"},"content":{"rendered":"

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

In the world of cybersecurity, a new vulnerability has been discovered that is classified as critical. This vulnerability, dubbed CVE-2025-7422, affects Tenda O3V2 1.0.0.12(3880) and can potentially lead to the compromise of systems or data leakage. This vulnerability is significant because it can be exploited remotely<\/a>, putting a wide swath of systems at risk. It’s also important to note that the exploit has been disclosed to the public, which means it could be used by malicious parties.<\/p>\n

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

CVE ID: CVE-2025-7422
\nSeverity: Critical, with a CVSS score of 8.8
\nAttack Vector: Network
\nPrivileges Required: None
\nUser Interaction: None
\nImpact: Potential system<\/a> compromise and data leakage<\/p>\n

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

Product | Affected Versions<\/p>\n

Tenda O3V2<\/a> | 1.0.0.12(3880)<\/p>\n

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

The vulnerability resides in the function setAutoReboot of the file<\/a> \/goform\/setNetworkService of the httpd component. The manipulation of the ‘week’ argument can lead to a stack-based buffer<\/a> overflow. A buffer overflow<\/a> occurs when an application tries to store more data in a buffer than it was intended to hold. This overflow can overwrite adjacent memory<\/a> locations, leading to erratic application behavior, including access violations or crashes. In this case, remote attackers can exploit this vulnerability to execute arbitrary code<\/a> on the affected systems, leading to potential system compromise or data leakage.<\/p>\n

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

Here’s a conceptual example of how this vulnerability might be exploited. This example is a generic representation and may not work as-is:<\/p>\n

POST \/goform\/setNetworkService HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/x-www-form-urlencoded\nweek=AAAA...[much longer string of A's]...<\/code><\/pre>\n
In this example, a malicious actor sends an HTTP POST request<\/a> with an excessively long string for the ‘week’ argument. This string exceeds the buffer size allocated for the ‘week’ parameter, causing a buffer overflow<\/a>.<\/p>\n
Recommended Mitigation<\/strong><\/p>\n
The best mitigation for this critical vulnerability<\/a> is to apply the vendor patch as soon as it becomes available. In the meantime, using a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) can provide a temporary mitigation solution. These tools can help detect and block malicious requests attempting to exploit the vulnerability<\/a>.
\nAlways remember, staying up-to-date with patches and security updates is a fundamental part of maintaining a secure system<\/a>. If you’re a user or administrator of Tenda O3V2 1.0.0.12(3880), ensure you apply the necessary updates to keep your systems secure.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview In the world of cybersecurity, a new vulnerability has been discovered that is classified as critical. This vulnerability, dubbed CVE-2025-7422, affects Tenda O3V2 1.0.0.12(3880) and can potentially lead to the compromise of systems or data leakage. This vulnerability is significant because it can be exploited remotely, putting a wide swath of systems at risk. […]<\/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":[103],"product":[104],"attack_vector":[86],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-59455","post","type-post","status-publish","format-standard","hentry","category-uncategorized","vendor-apache","product-apache-httpd","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