CVE-2025-55254 is an open redirect vulnerability classified under CWE-601 found in HCL Software's BigFix Remote Control Lite Web Portal, specifically in versions 10.1.0.0326 and earlier. The root cause is improper management of path-relative stylesheet imports, which can be manipulated to redirect users to untrusted external websites. This vulnerability does not require user authentication or interaction, and the attack vector is network-based. The CVSS v3.1 score is 3.7, reflecting low severity due to limited confidentiality impact and no integrity or availability compromise. The vulnerability could be exploited by attackers to craft malicious URLs that appear to originate from the legitimate BigFix portal, potentially facilitating phishing, social engineering, or delivery of malicious payloads through trusted-looking redirects. Although no known exploits are currently reported in the wild, the presence of this vulnerability in a remote control product used for endpoint management and support increases the risk profile if left unpatched. The lack of patches at the time of publication suggests the need for immediate attention from administrators. The vulnerability's exploitation could undermine user trust and potentially lead to further attacks if combined with other vulnerabilities or social engineering tactics.

For European organizations, the primary impact of CVE-2025-55254 lies in the potential for phishing and social engineering attacks leveraging trusted BigFix Remote Control portals to redirect users to malicious sites. This could lead to credential theft, malware infection, or unauthorized access if users are deceived. While the vulnerability itself does not directly compromise system integrity or availability, it can serve as an initial vector in multi-stage attacks. Organizations relying heavily on BigFix for endpoint management, especially in sectors like finance, healthcare, and critical infrastructure, may face increased risk of targeted attacks exploiting this redirect. The low CVSS score indicates limited direct damage, but the indirect consequences through user deception and trust exploitation could be significant. European entities with strict data protection regulations (e.g., GDPR) must consider the reputational and compliance risks associated with any successful phishing campaigns originating from compromised trusted portals.

1. Monitor HCL Software advisories closely and apply official patches or updates for BigFix Remote Control Lite Web Portal as soon as they become available. 2. In the interim, implement strict input validation and sanitization on URL parameters and stylesheet import paths to prevent manipulation of redirects. 3. Employ web application firewalls (WAFs) with rules to detect and block suspicious URL redirection patterns targeting the BigFix portal. 4. Educate users and administrators about the risks of phishing and social engineering attacks that may exploit this vulnerability, emphasizing caution with unexpected redirects. 5. Review and restrict external URL redirection capabilities within the portal configuration, disabling any unnecessary redirect functionality. 6. Conduct regular security assessments and penetration testing focused on web portal components to identify and remediate similar vulnerabilities proactively. 7. Implement network-level controls to monitor and alert on unusual outbound traffic patterns that could indicate exploitation attempts.