{"id":30077,"date":"2025-04-23T20:59:03","date_gmt":"2025-04-23T20:59:03","guid":{"rendered":""},"modified":"2025-06-23T23:24:06","modified_gmt":"2025-06-24T05:24:06","slug":"cve-2025-27539-sql-injection-vulnerability-in-telecontrol-server-basic","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-27539-sql-injection-vulnerability-in-telecontrol-server-basic\/","title":{"rendered":"CVE-2025-27539: SQL Injection Vulnerability in TeleControl Server Basic<\/strong>"},"content":{"rendered":"

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

The cybersecurity landscape is under constant threat from various vulnerabilities. One such vulnerability that poses a significant risk to the security of computer systems is CVE-2025-27539. This vulnerability affects all versions of TeleControl Server<\/a> Basic below version V3.1.2.2. This vulnerability is particularly concerning because it enables an unauthenticated remote attacker to bypass authorization controls, read from, and write to the application’s database and execute code<\/a> with “NT AUTHORITYNetworkService” permissions.
\nGiven the widespread use of TeleControl Server Basic across various organizations, this vulnerability, if exploited, could potentially lead<\/a> to a system compromise or data leakage. Therefore, understanding the nature of this vulnerability, how it works, and the steps that can be taken to mitigate it is essential for all cybersecurity<\/a> professionals and system administrators.<\/p>\n

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

CVE ID: CVE-2025-27539
\nSeverity: Critical (9.8 CVSS Score)
\nAttack Vector: Network
\nPrivileges Required: None
\nUser Interaction: None
\nImpact: Potential system<\/a> compromise, data leakage<\/p>\n

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

Product | Affected Versions<\/p>\n

TeleControl Server<\/a> Basic | All versions < V3.1.2.2\n\nHow the Exploit Works<\/strong><\/p>\n

The vulnerability is a result of the application’s improper<\/a> handling of user-supplied input in the ‘VerifyUser’ method. An attacker can exploit this vulnerability by sending specially crafted SQL<\/a> statements, which are passed to the application’s database. This allows the attacker to manipulate the SQL queries to extract data from the database, modify the data, or execute arbitrary code<\/a> with “NT AUTHORITYNetworkService” permissions.<\/p>\n

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

Below is a conceptual example of how an attacker might exploit this vulnerability<\/a> using an HTTP request:<\/p>\n

POST \/VerifyUser HTTP\/1.1\nHost: vulnerablehost:8000\nContent-Type: application\/json\n{ \"username\": \"admin'; DROP TABLE users;--\" }<\/code><\/pre>\n
In this example, the attacker sends a malicious SQL<\/a> statement as part of the ‘username’ parameter. This SQL statement is designed to drop the ‘users’ table<\/a> from the application’s database.<\/p>\n
Mitigation Guidance<\/strong><\/p>\n
To mitigate this vulnerability, users are advised to apply the vendor patch V3.1.2.2. As a temporary mitigation, users can use a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) to detect and prevent SQL injection<\/a> attacks. It is also highly recommended to follow the principle of least privilege. Ensure that any account that can access the ‘VerifyUser’ method does not have more privileges<\/a> than it needs to perform its intended function.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview The cybersecurity landscape is under constant threat from various vulnerabilities. One such vulnerability that poses a significant risk to the security of computer systems is CVE-2025-27539. This vulnerability affects all versions of TeleControl Server Basic below version V3.1.2.2. This vulnerability is particularly concerning because it enables an unauthenticated remote attacker to bypass authorization controls, […]<\/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":[74],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-30077","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-sql-injection"],"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