{"id":59459,"date":"2025-07-18T03:45:35","date_gmt":"2025-07-18T03:45:35","guid":{"rendered":""},"modified":"2025-09-26T14:05:00","modified_gmt":"2025-09-26T20:05:00","slug":"cve-2025-7434-critical-buffer-overflow-vulnerability-in-tenda-fh451","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-7434-critical-buffer-overflow-vulnerability-in-tenda-fh451\/","title":{"rendered":"CVE-2025-7434: Critical Buffer Overflow Vulnerability in Tenda FH451<\/strong>"},"content":{"rendered":"

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

The cybersecurity community has recently identified a critical vulnerability in Tenda FH451 devices up to version 1.0.0.9. This vulnerability, identified as CVE-2025-7434, exists within the POST Request Handler component, specifically within the fromAddressNat function of the \/goform\/addressNat file. The exploitation of this vulnerability could lead to a stack-based buffer<\/a> overflow, potentially allowing an attacker to compromise the system or leak sensitive data. Given the severity of this vulnerability<\/a>, it has become crucial for users of the affected devices to understand its implications and take immediate steps towards mitigation.<\/p>\n

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

CVE ID: CVE-2025-7434
\nSeverity: Critical, CVSS Score 8.8
\nAttack Vector: Network
\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

Tenda FH451<\/a> | Up to 1.0.0.9<\/p>\n

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

The vulnerability originates from the manipulation of the ‘page’<\/a> argument in the fromAddressNat function of the \/goform\/addressNat file. This manipulation could lead to a stack-based buffer overflow<\/a>, which could potentially allow an attacker to execute arbitrary code or crash the device, leading to a denial of service. The exploit is network-based, indicating that the attacker can launch the attack remotely without requiring any user interaction.<\/p>\n

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

Here is a conceptual HTTP POST request example that an attacker might use to exploit<\/a> the vulnerability:<\/p>\n

POST \/goform\/addressNat HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/x-www-form-urlencoded\npage=[Buffer-Overflow-Payload]<\/code><\/pre>\n
The [Buffer-Overflow-Payload] in the above POST request represents a malicious input designed to overflow the stack buffer<\/a>, leading to the potential execution of arbitrary code.<\/p>\n
Mitigation<\/strong><\/p>\n
Users of the affected Tenda FH451<\/a> devices are strongly recommended to apply the vendor-supplied patch to mitigate the vulnerability. If a patch cannot be immediately applied, users may also consider implementing a Web Application<\/a> Firewall (WAF) or an Intrusion Detection System (IDS) as a temporary mitigation measure. These systems can help identify and block attempts to exploit this vulnerability<\/a>. Additionally, monitoring network traffic and logging<\/a> any suspicious activity can provide early warning signs of a possible attack.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview The cybersecurity community has recently identified a critical vulnerability in Tenda FH451 devices up to version 1.0.0.9. This vulnerability, identified as CVE-2025-7434, exists within the POST Request Handler component, specifically within the fromAddressNat function of the \/goform\/addressNat file. The exploitation of this vulnerability could lead to a stack-based buffer overflow, potentially allowing an attacker […]<\/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":[86,87],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-59459","post","type-post","status-publish","format-standard","hentry","category-uncategorized","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