{"id":32882,"date":"2025-04-28T02:42:04","date_gmt":"2025-04-28T02:42:04","guid":{"rendered":""},"modified":"2025-09-08T04:18:59","modified_gmt":"2025-09-08T10:18:59","slug":"cve-2025-28034-remote-command-execution-vulnerability-in-totolink-wireless-routers","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-28034-remote-command-execution-vulnerability-in-totolink-wireless-routers\/","title":{"rendered":"CVE-2025-28034: Remote Command Execution Vulnerability in TOTOLINK Wireless Routers<\/strong>"},"content":{"rendered":"

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

In this blog post, we are going to discuss a critical cybersecurity vulnerability identified as CVE-2025-28034, which poses a significant threat to a series of wireless routers produced by TOTOLINK. The affected products, due to a flaw in the NTPSyncWithHost function, have been found susceptible to pre-auth remote command execution attacks, which could potentially lead to system compromise or data leakage. Given the CVSS Severity Score of 9.8, this vulnerability is of paramount importance<\/a> and requires immediate attention and mitigation.<\/p>\n

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

CVE ID: CVE-2025-28034
\nSeverity: Critical (CVSS: 9.8)
\nAttack Vector: Remote Network<\/a>
\nPrivileges Required: None
\nUser Interaction: None
\nImpact: System compromise or data<\/a> leakage<\/p>\n

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

Product | Affected Versions<\/p>\n

TOTOLINK A800R | V4.1.2cu.5137_B20200730
\nTOTOLINK A810R<\/a> | V4.1.2cu.5182_B20201026
\nTOTOLINK A830R | V4.1.2cu.5182_B20201102
\nTOTOLINK A950RG<\/a> | V4.1.2cu.5161_B20200903
\nTOTOLINK A3000RU | V5.9c.5185_B20201128
\nTOTOLINK A3100R | V4.1.2cu.5247_B20211129<\/p>\n

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

The vulnerability resides in the NTPSyncWithHost function<\/a>, which can be exploited through the hostTime parameter. An attacker can send a specially crafted request with malicious<\/a> commands to this parameter. Since the vulnerability is pre-auth<\/a>, the attacker doesn’t need any authentication details to execute this attack. Once the malicious request is processed, the router executes the commands<\/a>, leading to a potential system compromise or data leakage.<\/p>\n

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

Below is a conceptual example of how this vulnerability might be exploited. This example demonstrates a POST request<\/a> with a malicious payload.<\/p>\n

POST \/NTPSyncWithHost HTTP\/1.1\nHost: vulnerable_router_ip\nContent-Type: application\/x-www-form-urlencoded\nhostTime=;rm%20-rf%20\/*;<\/code><\/pre>\n
In the above example, the malicious payload `;rm%20-rf%20\/*;` is URL-encoded and is equivalent to `;rm -rf \/*;` in shell command, which aims to delete all files in the system<\/a>. The semicolons before and after the command ensure that it’s executed<\/a> regardless of the original function of the hostTime parameter.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview In this blog post, we are going to discuss a critical cybersecurity vulnerability identified as CVE-2025-28034, which poses a significant threat to a series of wireless routers produced by TOTOLINK. The affected products, due to a flaw in the NTPSyncWithHost function, have been found susceptible to pre-auth remote command execution attacks, which could potentially […]<\/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":[80],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-32882","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-rce"],"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