CVE-2025-34228 is a server-side request forgery (SSRF) vulnerability found in Vasion Print (formerly PrinterLogic) Virtual Appliance Host prior to version 25.1.102 and Application prior to 25.1.1413 in VA/SaaS deployments. The vulnerability exists because the PHP script located at /var/www/app/console_release/lexmark/update.php is exposed to the internet without any authentication controls. This script accepts user-supplied input to build URLs and then executes HTTP requests using functions like curl_exec() or file_get_contents() without validating or sanitizing the input. As a result, an unauthenticated remote attacker can supply arbitrary hostnames, causing the server to send requests to internal network resources that would otherwise be inaccessible externally. This can lead to internal network reconnaissance, allowing attackers to map internal services and potentially pivot to other systems. Additionally, attackers may exfiltrate sensitive data by leveraging the server as a proxy. The vulnerability is classified under CWE-306 (Missing Authentication for Critical Function) and CWE-918 (Server-Side Request Forgery). The CVSS 4.0 base score is 8.8, reflecting high severity due to network attack vector, no required privileges or user interaction, and high impact on confidentiality. While a patch has been confirmed, the timing of its release is unclear, and no public exploits have been reported yet. Organizations running vulnerable versions of Vasion Print Virtual Appliance Host or Application in VA/SaaS mode should consider this a critical security risk.

For European organizations, this vulnerability poses a significant risk to internal network security and data confidentiality. Exploitation can allow attackers to bypass perimeter defenses by leveraging the vulnerable appliance as a proxy to access internal services, potentially leading to lateral movement within corporate networks. This is particularly concerning for organizations with sensitive or regulated data, such as financial institutions, healthcare providers, and government agencies. The ability to perform internal reconnaissance can facilitate further targeted attacks, including privilege escalation and data exfiltration. Additionally, organizations relying on Vasion Print for centralized print management may experience disruption or compromise of printing infrastructure, impacting business continuity. Since the vulnerable endpoint is internet-exposed and unauthenticated, the attack surface is broad, increasing the likelihood of opportunistic attacks. The absence of known exploits in the wild does not diminish the urgency, as the vulnerability is straightforward to exploit remotely without authentication or user interaction.

1. Immediately apply the latest patches or upgrades from Vasion that address CVE-2025-34228 once available, prioritizing Virtual Appliance Host version 25.1.102 and Application version 25.1.1413 or later. 2. Until patches are applied, restrict external network access to the vulnerable PHP script endpoint by implementing firewall rules or network ACLs to limit access to trusted IP addresses only. 3. Employ network segmentation to isolate print management appliances from critical internal systems and sensitive data repositories, minimizing potential lateral movement. 4. Monitor network traffic logs for unusual outbound requests originating from the appliance, especially to internal IP ranges or unexpected external destinations. 5. Conduct internal vulnerability scans and penetration tests to identify any residual exposure or exploitation attempts. 6. Review and harden appliance configurations to disable unnecessary services or scripts accessible from the internet. 7. Implement web application firewalls (WAF) with custom rules to detect and block SSRF attack patterns targeting the vulnerable endpoint. 8. Educate IT staff on the risks of SSRF vulnerabilities and ensure incident response plans include steps for this type of attack.