The vulnerability identified as CVE-2025-57202 is a stored cross-site scripting (XSS) flaw located in the PwdGrp.cgi endpoint of AVTECH SECURITY Corporation's DGM1104 FullImg-1015-1004-1006-1003 device firmware. Stored XSS vulnerabilities occur when malicious input is saved by the application and later rendered in users' browsers without proper sanitization. In this case, attackers can inject crafted payloads into the username field, which the device's web interface stores and subsequently executes as active web scripts or HTML code. This can lead to a range of attacks including session hijacking, theft of authentication tokens, defacement of the management interface, or execution of unauthorized commands within the context of the logged-in user. The affected product appears to be embedded security devices, likely IP cameras or network video recorders, which are commonly used in physical security deployments. The lack of a CVSS score and absence of known exploits in the wild suggest this is a newly disclosed vulnerability. However, the stored nature of the XSS increases its severity compared to reflected XSS, as the malicious script persists and can affect multiple users. The vulnerability arises from insufficient input validation and output encoding in the device's web management interface. Attackers do not require authentication or user interaction beyond submitting the malicious username payload, increasing the risk. The flaw could be leveraged to compromise device integrity and confidentiality, potentially providing a foothold for further network intrusion. The technical details do not specify affected firmware versions or patches, indicating that users should monitor AVTECH advisories closely. Given the embedded nature of the device, remediation might require firmware updates or configuration changes to restrict access to the management interface.

For European organizations, this vulnerability poses a significant risk especially to those relying on AVTECH security devices for physical security monitoring and access control. Exploitation could lead to unauthorized access to device management interfaces, allowing attackers to manipulate device settings, disable security features, or pivot into broader network environments. The stored XSS can facilitate credential theft or session hijacking of administrators, undermining the confidentiality and integrity of security operations. This could result in compromised surveillance, data leakage, or disruption of security services. Organizations in critical infrastructure sectors, government facilities, and enterprises with extensive physical security deployments are particularly vulnerable. The persistence of the malicious payload increases the attack surface and potential impact. Additionally, the embedded nature of these devices often means they are less frequently updated, increasing exposure duration. The absence of known exploits in the wild currently limits immediate risk, but the vulnerability’s disclosure may prompt attackers to develop exploits. The impact on availability is limited but possible if attackers disrupt device functionality. Overall, the threat could undermine trust in physical security systems and increase the risk of broader cyber intrusions.

To mitigate this vulnerability, European organizations should first inventory all AVTECH DGM1104 devices and related firmware versions to assess exposure. They should monitor AVTECH SECURITY Corporation's official channels for firmware updates or patches addressing CVE-2025-57202 and apply them promptly. In the absence of patches, organizations should restrict access to the device management interfaces by implementing network segmentation and firewall rules to limit access only to trusted administrators. Employing web application firewalls (WAFs) capable of detecting and blocking XSS payloads can provide an additional layer of defense. Administrators should enforce strong authentication mechanisms and consider multi-factor authentication where supported to reduce the risk of session hijacking. Regularly auditing device logs for suspicious activity and conducting penetration testing focused on web interface vulnerabilities can help identify exploitation attempts. Additionally, organizations should educate administrators about the risks of stored XSS and the importance of cautious input handling. If possible, disabling or limiting the use of the vulnerable PwdGrp.cgi endpoint or replacing affected devices with more secure alternatives can be considered as longer-term measures.