CVE-2026-1617 Overview
CVE-2026-1617 is a SQL injection vulnerability affecting Turkmesh Communication Services Inc. Turkhotspot 5651 Loglama. The flaw stems from improper neutralization of special elements used in SQL commands [CWE-89]. Unauthenticated remote attackers can inject arbitrary SQL statements over the network without user interaction. Successful exploitation can compromise the confidentiality, integrity, and availability of the underlying database. The vulnerability affects versions from 5.1.2 before 5.1.3.
Critical Impact
Unauthenticated network-based SQL injection enabling full database compromise, including data theft, modification, and potential service disruption on Turkhotspot 5651 Loglama deployments used for legally mandated Turkish hotspot logging.
Affected Products
- Turkmesh Communication Services Inc. Turkhotspot 5651 Loglama 5.1.2
- Turkmesh Communication Services Inc. Turkhotspot 5651 Loglama versions before 5.1.3
Discovery Timeline
- 2026-07-21 - CVE CVE-2026-1617 published to NVD
- 2026-07-21 - Last updated in NVD database
Technical Details for CVE-2026-1617
Vulnerability Analysis
Turkhotspot 5651 Loglama is a hotspot logging solution used to meet Turkish Law 5651 record-keeping requirements. The application constructs SQL queries using untrusted input without proper parameterization or escaping. Attackers submit crafted parameters that alter query structure and execute arbitrary SQL against the backend database.
Because the attack vector is network-based and requires no authentication or user interaction, exploitation can be automated at scale. An attacker can enumerate database schemas, extract stored session records, tamper with log integrity, or escalate to command execution depending on database privileges. Compromised log data undermines the regulatory purpose of the product, since 5651 Loglama systems must preserve tamper-evident session records.
Root Cause
The root cause is failure to neutralize special elements in SQL statements [CWE-89]. User-controlled input reaches SQL query construction without prepared statements or input validation. The Turkish national cybersecurity authority documents the issue in Siber Güvenlik Security Alert TR-26-0584.
Attack Vector
A remote attacker sends HTTP requests containing malicious SQL payloads to vulnerable Turkhotspot 5651 Loglama endpoints. The injected SQL executes with the privileges of the application database user. Refer to the vendor advisory for endpoint-specific technical details.
Detection Methods for CVE-2026-1617
Indicators of Compromise
- Web server access logs containing SQL metacharacters such as ', --, UNION SELECT, OR 1=1, or hex-encoded payloads directed at Turkhotspot 5651 Loglama endpoints.
- Unexpected database errors, long-running queries, or INFORMATION_SCHEMA reads originating from the Turkhotspot application account.
- Outbound connections from the Turkhotspot host to unfamiliar IP addresses, indicating potential data exfiltration.
Detection Strategies
- Deploy web application firewall rules that identify SQL injection patterns targeting Turkhotspot 5651 Loglama HTTP parameters.
- Enable database query auditing and alert on anomalous statements from the application service account, such as schema enumeration or bulk SELECT operations.
- Correlate authentication logs, database logs, and network flow data to identify unauthenticated request bursts preceding suspicious database activity.
Monitoring Recommendations
- Monitor Turkhotspot 5651 Loglama application logs for stack traces, syntax errors, and HTTP 500 responses that indicate injection probing.
- Track database CPU utilization and query volume for baseline deviations that may signal automated exploitation.
- Alert on modifications to logging tables, since altered records break the integrity guarantees required by Turkish Law 5651.
How to Mitigate CVE-2026-1617
Immediate Actions Required
- Upgrade Turkhotspot 5651 Loglama to version 5.1.3 or later, which contains the vendor fix.
- Restrict network access to the Turkhotspot management and application interfaces using firewall rules that limit exposure to trusted administrative networks.
- Rotate database credentials and review database audit logs for evidence of prior exploitation.
Patch Information
Turkmesh Communication Services Inc. addresses CVE-2026-1617 in Turkhotspot 5651 Loglama version 5.1.3. Consult the Siber Güvenlik Security Alert TR-26-0584 for vendor guidance and coordinated remediation instructions.
Workarounds
- Place a web application firewall in front of the Turkhotspot application to filter SQL injection payloads until patching completes.
- Apply least-privilege principles to the database account used by Turkhotspot, removing DROP, ALTER, and cross-database privileges.
- Isolate the Turkhotspot server on a dedicated network segment with strict ingress and egress controls to limit blast radius.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
