Overview
This article details a stored Cross-Site Scripting (XSS) vulnerability identified as CVE-2025-57202 affecting the AVTECH SECURITY Corporation DGM1104 device. This vulnerability allows attackers to inject malicious JavaScript or HTML code into the device’s web interface, potentially compromising user accounts and system integrity. This issue resides in the `PwdGrp.cgi` endpoint.
Technical Details
The vulnerability exists within the `PwdGrp.cgi` endpoint of the AVTECH DGM1104 device’s web interface. Specifically, the `username` field is susceptible to stored XSS. An attacker can inject a malicious payload (e.g., a JavaScript snippet) into this field. When another user (or the administrator) views the user management section, the injected payload will be executed within their browser, in the context of the device’s web domain.
The vulnerable firmware versions are: FullImg-1015-1004-1006-1003.
An example payload might look like this: <script>alert('XSS Vulnerability!')</script>. When this payload is stored as the username, it executes when the user management page is rendered.
CVSS Analysis
As of the publication of this article, a CVSS score has not been assigned to CVE-2025-57202. However, based on the potential impact of a stored XSS vulnerability, it’s likely to be classified as a Medium to High severity vulnerability once a CVSS score is assigned, depending on the exploitability and scope of impact.
Possible Impact
The exploitation of this vulnerability could have several serious consequences:
- Account Takeover: Attackers could steal user session cookies and gain unauthorized access to user accounts, including administrative accounts.
- Malware Distribution: Malicious scripts could redirect users to phishing websites or download malware onto their computers.
- Defacement: The attacker can inject malicious scripts to change the layout and content of the website.
- Information Theft: Sensitive information displayed within the web interface could be exfiltrated to a remote server controlled by the attacker.
Mitigation and Patch Steps
Unfortunately, information regarding a patch or firmware update for the AVTECH DGM1104 is not publicly available at this time. Until a patch is released, consider the following mitigation steps:
- Restrict Access: Limit access to the DGM1104 web interface to only trusted users and networks.
- Input Validation: If possible, implement robust input validation and sanitization on the `username` field to prevent the injection of malicious code. (This would require accessing the device’s underlying software, which may not be feasible for all users.)
- Network Segmentation: Isolate the DGM1104 device on a separate network segment to limit the potential impact of a successful attack.
- Monitor Network Traffic: Implement network monitoring to detect suspicious activity and potential XSS attacks.
- Disable unnecessary features Disable any unused features or services on the DGM1104 device.
- Consider Replacement If possible, consider replacing the DGM1104 device with a more secure alternative that receives regular security updates.
Stay Updated: Monitor the AVTECH website and other security news sources for updates regarding a patch or firmware fix for this vulnerability.
References
AVTECH Website
DGM1104 Website
CVE-2025-57202 Vulnerability Research on GitHub
