TONNET E-LAN Hybrid Recording System SQL Injection Vulnerability (CVE-2026-9003)

The TONNET E-LAN Hybrid Recording System is susceptible to a SQL Injection vulnerability (CVE-2026-9003). This flaw allows unauthenticated remote attackers to inject arbitrary SQL commands into the system and potentially read sensitive database contents. The vulnerability stems from improper sanitization of user-supplied input that is used in SQL queries. Successful exploitation could lead to unauthorized data access. This vulnerability was reported by TWCERT/CC.

Attack Chain

1. An unauthenticated attacker identifies a vulnerable endpoint in the E-LAN Hybrid Recording System.
2. The attacker crafts a malicious HTTP request containing SQL injection payloads within URL parameters or POST data.
3. The crafted request is sent to the vulnerable endpoint.
4. The application fails to properly sanitize the injected SQL code.
5. The application executes the attacker-controlled SQL query against the database.
6. The attacker retrieves sensitive information from the database, such as usernames, passwords, or configuration details.
7. The attacker may further exploit the system by modifying data or executing arbitrary commands depending on database permissions.

Impact

Successful exploitation of this vulnerability allows an unauthenticated attacker to read sensitive information from the database of the E-LAN Hybrid Recording System. This could expose confidential recordings, user credentials, and system configuration details. The impact is significant, as it can lead to complete compromise of the recording system’s data and functionality.

Recommendation

• Apply available patches or updates from TONNET to remediate CVE-2026-9003.
• Deploy the Sigma rule Detect CVE-2026-9003 Exploitation - SQL Injection Attempt to detect exploitation attempts against the TONNET E-LAN Hybrid Recording System.
• Implement input validation and sanitization techniques to prevent SQL injection vulnerabilities in web applications.
• Monitor web server logs for suspicious HTTP requests containing SQL injection payloads.