CVE-2026-2621 in Koyuan Thermoelectricity Heat Network Management System
Summary
by MITRE • 02/17/2026
A security vulnerability has been detected in Sciyon Koyuan Thermoelectricity Heat Network Management System 3.0. This affects an unknown part of the file /SISReport/WebReport20/Proxy/AsyncTreeProxy.aspx. The manipulation of the argument PGUID leads to sql injection. The attack can be initiated remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
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Analysis
by VulDB Data Team • 02/18/2026
This vulnerability resides within the Sciyon Koyuan Thermoelectricity Heat Network Management System version 3.0 where a sql injection flaw has been identified in the AsyncTreeProxy.aspx file located at /SISReport/WebReport20/Proxy/. The vulnerability specifically involves the manipulation of the PGUID argument which serves as an input parameter to the web application. When an attacker successfully exploits this weakness, they can inject malicious sql commands that bypass normal authentication and authorization mechanisms, potentially allowing unauthorized access to the underlying database system. The vulnerability represents a critical security risk as it enables remote code execution and data breach capabilities through the manipulation of this single parameter.
The technical exploitation of this sql injection vulnerability follows standard attack patterns that align with common weakness enumeration CWE-89, which specifically addresses sql injection flaws in software applications. The vulnerability operates by directly incorporating user-supplied input from the PGUID parameter into sql query construction without proper sanitization or parameterization. This creates a direct path for attackers to manipulate the intended database query execution flow, allowing them to extract sensitive information, modify database records, or even execute administrative commands on the database server. The fact that this vulnerability can be initiated remotely means that attackers do not require physical access to the system or local network presence to exploit the flaw.
The operational impact of this vulnerability extends beyond simple data theft, as it represents a significant compromise to the integrity and confidentiality of the heat network management system. Attackers who successfully exploit this vulnerability could gain access to critical infrastructure data including operational parameters, customer information, billing records, and system configurations that govern the thermoelectricity network operations. This access could potentially disrupt service delivery, compromise safety protocols, or enable more sophisticated attacks against the broader infrastructure. The vulnerability's disclosure status and the vendor's lack of response creates an environment where the attack surface remains exposed for extended periods, increasing the likelihood of exploitation by malicious actors who may have already developed working exploits.
Organizations should immediately implement mitigations including input validation and parameterized query usage to prevent sql injection attacks. The recommended defensive measures include implementing proper input sanitization for all user-supplied parameters, deploying web application firewalls, and conducting comprehensive code reviews to identify similar vulnerabilities throughout the application codebase. Additionally, network segmentation and access controls should be strengthened to limit potential lateral movement if exploitation occurs. The vulnerability also highlights the importance of maintaining vendor communication channels and establishing clear security disclosure procedures. According to ATT&CK framework tactic TA0006, this vulnerability enables credential access and privilege escalation through database manipulation, while tactic TA0002 covers the initial access and exploitation phases. Organizations should also consider implementing database activity monitoring and audit logging to detect anomalous sql query patterns that may indicate exploitation attempts. The lack of vendor response to early disclosure underscores the need for organizations to maintain independent security assessment capabilities and not rely solely on vendor-provided patches or updates.