CVE-2025-58270 is a Cross-Site Request Forgery (CSRF) vulnerability identified in NIX Solutions Ltd's product NIX Anti-Spam Light, affecting versions up to 0.0.4. CSRF vulnerabilities allow an attacker to trick an authenticated user into submitting a forged HTTP request to a web application in which they are currently authenticated. This can result in unauthorized commands being executed on behalf of the user without their consent. In this case, the vulnerability affects the NIX Anti-Spam Light product, which is designed to provide anti-spam filtering capabilities. The CVSS 3.1 base score of 7.1 indicates a high severity, with the vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L. This means the attack can be performed remotely over the network (AV:N) with low attack complexity (AC:L), does not require privileges (PR:N), but requires user interaction (UI:R). The scope is changed (S:C), indicating that the vulnerability affects resources beyond the initially vulnerable component. The impact on confidentiality, integrity, and availability is low to low to low respectively, but the scope change suggests a broader impact. No known exploits are currently reported in the wild, and no patches have been linked yet. The vulnerability arises because the application does not properly verify that requests are intentionally made by the user, allowing attackers to craft malicious requests that the victim unknowingly executes. This can lead to unauthorized actions such as changing configuration settings, modifying filtering rules, or other administrative functions within the anti-spam product, potentially degrading email security or causing denial of service conditions.

For European organizations, the impact of this CSRF vulnerability can be significant, especially for those relying on NIX Anti-Spam Light to protect their email infrastructure. Successful exploitation could allow attackers to manipulate anti-spam settings, potentially allowing spam, phishing, or malware-laden emails to bypass filters. This could lead to increased risk of malware infections, data breaches, or disruption of email communications. Given the scope change in the CVSS vector, the vulnerability might allow attackers to affect components beyond the immediate application, possibly impacting other integrated systems or services. Organizations handling sensitive or regulated data (e.g., GDPR-protected personal data) could face compliance risks if email security is compromised. The requirement for user interaction means phishing or social engineering could be used to induce users to trigger the attack, increasing the risk in environments with less security awareness. The lack of a patch at present means organizations must rely on mitigation strategies to reduce exposure. Overall, the vulnerability poses a high risk to confidentiality, integrity, and availability of email security controls within affected European enterprises.

1. Implement strict anti-CSRF tokens in all state-changing requests within NIX Anti-Spam Light to ensure requests are legitimate and intentional. 2. Enforce SameSite cookie attributes to restrict cross-origin requests and reduce CSRF attack surface. 3. Limit the exposure of the NIX Anti-Spam Light administrative interface to trusted networks only, using network segmentation and firewall rules. 4. Educate users and administrators about the risks of CSRF and the importance of not clicking on suspicious links or performing sensitive operations from untrusted sources. 5. Monitor logs for unusual or unauthorized configuration changes that could indicate exploitation attempts. 6. If possible, deploy web application firewalls (WAFs) with rules to detect and block CSRF attack patterns targeting the product. 7. Maintain up-to-date backups of configuration and system states to enable quick recovery if unauthorized changes occur. 8. Engage with NIX Solutions Ltd for timely patches or updates and apply them as soon as they become available. 9. Consider multi-factor authentication for administrative access to reduce risk from compromised credentials combined with CSRF.