CVE-2026-1449: Hisense TransTech Smart Bus SQLi Flaw

CVE-2026-1449 Overview

A SQL injection vulnerability has been identified in the Hisense TransTech Smart Bus Management System affecting versions up to 20260113. The vulnerability exists in the Page_Load function within the file YZSoft/Forms/XForm/BM/BusComManagement/TireMng.aspx. An attacker can manipulate the key argument to inject malicious SQL commands, potentially compromising the underlying database and sensitive transportation management data.

Critical Impact

This SQL injection vulnerability allows remote attackers to execute arbitrary SQL commands against the backend database without authentication, potentially exposing sensitive bus management data, user credentials, and transportation system configurations.

Affected Products

• Hisense TransTech Smart Bus Management System (versions up to 20260113)
• TireMng.aspx component in YZSoft Forms module
• BusComManagement subsystem

Discovery Timeline

• 2026-01-27 - CVE-2026-1449 published to NVD
• 2026-01-27 - Last updated in NVD database

Technical Details for CVE-2026-1449

Vulnerability Analysis

This vulnerability is classified under CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component), commonly known as injection. The flaw resides in the tire management functionality of the Smart Bus Management System, specifically in how the application processes user-supplied input through the key parameter.

When the Page_Load function executes, it accepts the key argument without proper sanitization or parameterized query usage. This allows attackers to inject SQL syntax that gets interpreted by the database engine, breaking out of the intended query context to execute unauthorized database operations.

The vulnerability is remotely exploitable over the network, requiring no authentication or user interaction. An exploit has been publicly disclosed, increasing the risk of active exploitation in the wild. The vendor was contacted regarding this disclosure but did not provide any response.

Root Cause

The root cause of this vulnerability is improper input validation and the lack of parameterized queries in the TireMng.aspx page. The Page_Load function directly incorporates user-supplied data from the key parameter into SQL queries without sanitization, escaping, or the use of prepared statements. This architectural flaw allows attackers to inject arbitrary SQL code that the database interprets as legitimate commands.

Attack Vector

The attack can be executed remotely over the network by sending crafted HTTP requests to the vulnerable TireMng.aspx endpoint. An attacker manipulates the key parameter to include SQL metacharacters and malicious query fragments. The injected payload is then processed by the backend database, allowing the attacker to:

• Extract sensitive data from the database including user credentials and transportation records
• Modify or delete database contents affecting bus management operations
• Potentially escalate privileges within the application
• Execute administrative operations on the database server depending on configuration

The vulnerability requires low attack complexity with no privileges or user interaction needed, making it an attractive target for automated scanning tools and opportunistic attackers.

Detection Methods for CVE-2026-1449

Indicators of Compromise

• Unusual SQL syntax patterns in web server access logs targeting TireMng.aspx
• Requests containing SQL keywords (UNION, SELECT, DROP, INSERT) in the key parameter
• Database error messages or exceptions in application logs indicating query failures
• Unexpected database queries or data access patterns in database audit logs

Detection Strategies

• Deploy Web Application Firewall (WAF) rules to detect SQL injection patterns in requests to /YZSoft/Forms/XForm/BM/BusComManagement/TireMng.aspx
• Implement database query monitoring to identify anomalous query structures or unauthorized data access
• Configure intrusion detection systems (IDS) with signatures for common SQL injection payloads
• Enable verbose logging on web servers to capture full request parameters for forensic analysis

Monitoring Recommendations

• Monitor access logs for requests containing encoded SQL injection characters (%27, %22, %3D)
• Set up alerts for high-frequency requests to the vulnerable endpoint from single IP addresses
• Implement database activity monitoring to detect unauthorized SELECT, UPDATE, or DELETE operations
• Review authentication logs for signs of credential theft or unauthorized access attempts

How to Mitigate CVE-2026-1449

Immediate Actions Required

• Restrict network access to the Smart Bus Management System to trusted IP ranges only
• Implement a Web Application Firewall with SQL injection protection rules in front of the application
• Consider temporarily disabling the TireMng.aspx page if tire management functionality is not critical
• Enable database audit logging to detect and investigate any exploitation attempts

Patch Information

No vendor patch is currently available. According to the vulnerability disclosure, the vendor (Hisense TransTech) was contacted early about this issue but did not respond. Organizations using this system should implement the recommended workarounds and monitor for vendor updates.

For additional technical details, refer to the GitHub CVE Issue Discussion and VulDB #342881.

Workarounds

• Implement input validation on the key parameter at the application or WAF level to reject SQL metacharacters
• Use network segmentation to isolate the bus management system from untrusted networks
• Deploy a reverse proxy with request filtering capabilities to sanitize incoming parameters
• Apply database least privilege principles to limit the impact of successful SQL injection attacks

# Example WAF rule configuration (ModSecurity)
SecRule ARGS:key "@detectSQLi" \
    "id:1001,\
    phase:2,\
    deny,\
    status:403,\
    msg:'SQL Injection Attempt Detected in TireMng.aspx',\
    logdata:'Matched Data: %{MATCHED_VAR}'"