CVE-2026-2621
Received Received - Intake
SQL Injection in Sciyon Koyuan Heat Network Remote Exploit

Publication date: 2026-02-17

Last updated on: 2026-04-29

Assigner: VulDB

Description
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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Meta Information
Published
2026-02-17
Last Modified
2026-04-29
Generated
2026-06-16
AI Q&A
2026-02-17
EPSS Evaluated
2026-06-15
NVD
CVE-2026-2621
EUVD
EUVD-2026-7657
Affected Vendors & Products
Showing 2 associated CPEs
Vendor Product Version / Range
nanjing_koyuan_smart_technology_group_co_ltd koyuan_thermoelectricity_heat_network_management_system From 1.0 (inc) to 3.0 (inc)
nanjing_koyuan_smart_technology_group_co_ltd koyuan_thermoelectricity_heat_network_management_system 3.0
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-89 The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as SQL instead of ordinary user data.
CWE-74 The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.
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Executive Summary

CVE-2026-2621 is a critical SQL injection vulnerability found in Sciyon Koyuan Thermoelectricity Heat Network Management System version 3.0.

The flaw exists in the file /SISReport/WebReport20/Proxy/AsyncTreeProxy.aspx, specifically through improper handling of the PGUID argument.

Manipulating this argument with crafted input allows an attacker to inject SQL commands, which means they can interfere with the database queries executed by the system.

This vulnerability can be exploited remotely without any authentication, making it easy for attackers to launch attacks from anywhere.

The vulnerability is publicly disclosed and a proof-of-concept exploit is available, but no patches or fixes have been released by the vendor.

Impact Analysis

[{'type': 'paragraph', 'content': 'This vulnerability impacts the confidentiality, integrity, and availability of the affected system.'}, {'type': 'list_item', 'content': 'An attacker can execute arbitrary SQL commands remotely without authentication.'}, {'type': 'list_item', 'content': 'Sensitive database information can be accessed and retrieved by unauthorized parties.'}, {'type': 'list_item', 'content': "The system's data can be manipulated or deleted, potentially disrupting normal operations."}, {'type': 'list_item', 'content': 'Because the exploit is publicly available, the risk of exploitation is high.'}] [1, 2]

Compliance Impact

I don't know

Detection Guidance

[{'type': 'paragraph', 'content': 'This vulnerability can be detected by identifying if the vulnerable endpoint /SISReport/WebReport20/Proxy/AsyncTreeProxy.aspx is accessible on your system or network.'}, {'type': 'paragraph', 'content': 'One method to detect potentially vulnerable targets is using Google dorking with the query: inurl:SISReport/WebReport20/Proxy/AsyncTreeProxy.aspx'}, {'type': 'paragraph', 'content': 'To test for the SQL injection vulnerability, you can send crafted HTTP requests manipulating the PGUID parameter and observe if SQL errors or unexpected responses occur.'}, {'type': 'list_item', 'content': 'Example curl command to test the PGUID parameter for SQL injection: curl -v "http://target/SISReport/WebReport20/Proxy/AsyncTreeProxy.aspx?PGUID=1\' OR \'1\'=\'1"'}, {'type': 'list_item', 'content': 'Monitor network traffic for suspicious requests targeting the AsyncTreeProxy.aspx endpoint with unusual PGUID parameter values.'}] [1]

Mitigation Strategies

Currently, no official patches or fixes are available from the vendor for this vulnerability.

Immediate mitigation steps include restricting access to the vulnerable endpoint /SISReport/WebReport20/Proxy/AsyncTreeProxy.aspx by network-level controls such as firewalls or access control lists.

Consider disabling or removing the affected component if possible.

Monitor logs and network traffic for exploitation attempts targeting the PGUID parameter.

As a long-term solution, replace the affected product with an alternative that does not contain this vulnerability.

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