CVE-2026-2621
SQL Injection in Sciyon Koyuan Heat Network Remote Exploit
Publication date: 2026-02-17
Last updated on: 2026-04-29
Assigner: VulDB
Description
Description
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| 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 ID | Description |
|---|---|
| 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. |
| 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. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
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.
How can this vulnerability impact me? :
[{'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]
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
[{'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]
What immediate steps should I take to mitigate this vulnerability?
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.