CVE-2025-7885 is a cross-site scripting (XSS) vulnerability identified in Huashengdun WebSSH versions up to 1.6.2. The vulnerability resides in the login page component, specifically in the handling of the 'hostname' and 'port' parameters. An attacker can manipulate these parameters to inject malicious scripts that execute in the context of the victim's browser. This vulnerability is remotely exploitable without requiring authentication, but it does require user interaction, such as the victim clicking a crafted link or visiting a malicious page that triggers the payload. The CVSS 4.0 base score is 5.3, indicating a medium severity level. The attack vector is network-based with low attack complexity and no privileges required. The impact primarily affects the integrity of the victim's session and potentially the confidentiality of data accessible through the WebSSH interface, although availability is not impacted. The vendor has been contacted but has not responded or issued a patch, and no known exploits are currently observed in the wild. The public disclosure of the exploit code increases the risk of opportunistic attacks targeting vulnerable deployments.

For European organizations using Huashengdun WebSSH, this vulnerability poses a risk of session hijacking, credential theft, or unauthorized actions performed via the victim's browser session. Since WebSSH is used to manage SSH connections through a web interface, successful exploitation could lead to attackers gaining indirect access to critical infrastructure or sensitive systems managed via SSH. The medium severity indicates that while the vulnerability is not immediately critical, it can be leveraged as part of a broader attack chain. European organizations in sectors such as finance, telecommunications, and critical infrastructure that rely on WebSSH for remote management could face increased risk of targeted phishing campaigns or drive-by attacks exploiting this vulnerability. The lack of vendor response and patch availability prolongs exposure, increasing the window for attackers to develop and deploy exploits. Additionally, the vulnerability's reliance on user interaction means that social engineering remains a key risk factor.

Given the absence of an official patch, European organizations should implement compensating controls to reduce exposure. These include: 1) Restricting access to the WebSSH login page via network segmentation and firewall rules to trusted IP addresses only. 2) Employing web application firewalls (WAFs) with custom rules to detect and block suspicious input patterns in the 'hostname' and 'port' parameters. 3) Educating users about the risks of clicking unsolicited links and implementing strict browser security policies to limit script execution. 4) Monitoring web server logs for unusual parameter values or repeated attempts to inject scripts. 5) Considering temporary replacement or disabling of the vulnerable WebSSH service if feasible until a patch is released. 6) If possible, deploying input validation or sanitization proxies in front of the WebSSH application to neutralize malicious payloads. 7) Keeping all related infrastructure and browsers up to date to mitigate exploitation impact. Organizations should also maintain incident response readiness to detect and respond to potential exploitation attempts.