CVE-2025-61532 is a security vulnerability classified as Cross Site Scripting (XSS) affecting SVX Portal version 2.7A. The vulnerability exists in the last_heard_page.php component, where the TG parameter is improperly sanitized, allowing an attacker to inject malicious scripts. When a victim accesses a crafted URL containing malicious code in the TG parameter, the script executes in the victim's browser context. This can lead to session hijacking, theft of cookies, redirection to malicious sites, or execution of arbitrary JavaScript code. The vulnerability does not require prior authentication, increasing its risk profile, but does require user interaction to trigger the exploit. No official patch or CVSS score is currently available, and no known exploits have been reported in the wild. The lack of CWE classification suggests limited public technical details, but the nature of XSS vulnerabilities is well understood. The flaw impacts the confidentiality and integrity of user data and can undermine trust in the affected portal. Given the portal’s use in certain organizational contexts, exploitation could facilitate further attacks or data breaches.

For European organizations, exploitation of this XSS vulnerability could lead to unauthorized access to user sessions, data theft, and potential spread of malware through trusted web portals. This could disrupt business operations, compromise sensitive information, and damage organizational reputation. Sectors relying on SVX Portal for communication or operational management may face increased risk of targeted phishing or social engineering attacks leveraging this vulnerability. The impact is heightened in environments where SVX Portal is integrated with critical infrastructure or sensitive data systems. Additionally, regulatory compliance risks arise due to potential data breaches under GDPR, leading to financial penalties and legal consequences. The absence of known exploits currently reduces immediate risk but does not eliminate the threat, especially as attackers often weaponize disclosed vulnerabilities rapidly.

Organizations should immediately audit their use of SVX Portal version 2.7A and restrict access to the last_heard_page.php component if possible. Implement strict input validation and output encoding on the TG parameter to neutralize malicious scripts. Employ Content Security Policy (CSP) headers to limit script execution sources and reduce XSS impact. Increase user awareness through training to recognize and avoid suspicious links or unexpected portal behavior. Monitor web logs for unusual requests targeting the TG parameter. If vendor patches become available, apply them promptly. Consider deploying web application firewalls (WAFs) with custom rules to detect and block XSS payloads targeting this parameter. Conduct regular security assessments and penetration testing focused on web application vulnerabilities. Finally, ensure incident response plans include procedures for handling XSS exploitation scenarios.