CVE-2025-4763 is a reflected Cross-site Scripting (XSS) vulnerability classified under CWE-79, affecting the Hotel Guest Hotspot product by Aida Computer Information Technology Inc. The vulnerability stems from improper neutralization of user-supplied input during web page generation, which allows attackers to inject malicious JavaScript code into HTTP responses. When a victim interacts with a crafted URL or input, the malicious script executes in the victim's browser context, potentially leading to session hijacking, credential theft, or unauthorized actions performed on behalf of the user. The vulnerability is exploitable remotely (Attack Vector: Adjacent Network), requires no privileges (PR:N), but does require user interaction (UI:R), such as clicking a malicious link. The CVSS 3.1 base score is 5.5 (medium severity), reflecting limited impact on confidentiality, integrity, and availability (all low impact). The scope remains unchanged (S:U), meaning the vulnerability affects only the vulnerable component. The affected versions include all up to 22012026, and no patches or vendor acknowledgments have been issued. No known exploits have been reported in the wild to date. The vulnerability is particularly concerning in the context of hotel guest hotspots, which are often accessed by transient users and may lack robust security controls. Attackers could leverage this vulnerability to target guests or internal staff, potentially gaining access to sensitive information or performing unauthorized actions within the hotspot management interface or user sessions.

For European organizations, especially those in the hospitality sector operating Aida's Hotel Guest Hotspot systems, this vulnerability could lead to unauthorized disclosure of user session information, theft of credentials, or manipulation of user interactions. Although the impact on confidentiality, integrity, and availability is rated low individually, the combined effect could facilitate further attacks such as phishing, lateral movement within hotel networks, or compromise of guest devices. The transient nature of hotel guests and the public-facing nature of hotspot systems increase exposure risk. Additionally, compromised hotspots could damage brand reputation and lead to regulatory scrutiny under GDPR if personal data is exposed. The lack of vendor response and patches increases the urgency for organizations to implement compensating controls. The medium severity rating suggests that while immediate catastrophic impacts are unlikely, persistent exploitation could degrade trust and security posture in hospitality environments across Europe.

1. Implement strict input validation and output encoding on all user-supplied data within the hotspot web interface to prevent script injection. 2. Deploy Web Application Firewalls (WAFs) with rules specifically targeting reflected XSS patterns to block malicious requests before reaching the hotspot system. 3. Use Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in browsers connecting to the hotspot. 4. Educate hotel staff and users about the risks of clicking unknown or suspicious links, especially those related to hotspot login pages. 5. Segment the hotspot network from critical internal hotel systems to limit lateral movement if exploitation occurs. 6. Monitor network traffic and logs for unusual patterns indicative of XSS exploitation attempts. 7. Regularly review and update hotspot firmware and software, and engage with the vendor or community for any unofficial patches or mitigations. 8. Consider alternative hotspot solutions with better security track records if vendor support remains absent. 9. Conduct periodic security assessments and penetration tests focusing on web interface vulnerabilities. 10. Implement multi-factor authentication for administrative access to hotspot management interfaces to reduce risk from session hijacking.