CVE-2025-9269 is a Server-Side Request Forgery (SSRF) vulnerability identified in the embedded web servers of various Lexmark multifunction printer (MFP) and copier models, including the CX, XC, CS, MS, MX, and XM series. SSRF vulnerabilities allow an attacker to abuse a vulnerable server to send crafted HTTP requests to arbitrary third-party or internal network servers. In this case, the flaw resides in the Lexmark device's embedded web server, which processes incoming requests and can be manipulated to initiate HTTP requests to destinations chosen by the attacker. This can enable an attacker to bypass network segmentation and firewall rules, potentially accessing internal services that are otherwise inaccessible externally. The vulnerability does not require authentication or user interaction, and the attack vector is network-based, meaning an attacker can exploit it remotely over the network. The CVSS 4.0 base score is 6.9 (medium severity), reflecting the network attack vector, low complexity, and no privileges or user interaction required. The impact is primarily on confidentiality, as the attacker can coerce the device to send requests that may reveal sensitive internal information or facilitate further attacks such as internal reconnaissance or pivoting. The vulnerability does not directly affect integrity or availability. No known exploits have been reported in the wild as of the publication date. No patches or mitigations have been linked yet, indicating that organizations should prioritize monitoring and protective measures. The affected versions are not explicitly enumerated, but the vulnerability affects multiple Lexmark device series, suggesting a broad impact across many deployed devices. Given the widespread use of Lexmark MFPs in enterprise and government environments, this SSRF vulnerability represents a significant risk vector for internal network compromise if exploited.

For European organizations, this SSRF vulnerability poses a risk of unauthorized internal network access through compromised Lexmark devices. Many enterprises, public sector entities, and critical infrastructure operators in Europe deploy Lexmark multifunction printers extensively. Exploitation could allow attackers to bypass perimeter defenses and access internal services, potentially leading to data disclosure or facilitating lateral movement within networks. This is particularly concerning for organizations with sensitive data or regulatory requirements such as GDPR, where unauthorized data exposure can lead to compliance violations and financial penalties. The vulnerability could also be leveraged as a foothold for advanced persistent threat (APT) actors targeting European institutions. Since the attack requires no authentication or user interaction, it lowers the barrier for exploitation, increasing the threat level. However, the lack of known active exploits and the medium severity rating suggest that immediate catastrophic impact is less likely but should not be discounted. The internal network exposure risk is significant, especially in environments where network segmentation is weak or where Lexmark devices have elevated network privileges or access to sensitive internal systems.

1. Network Segmentation: Isolate Lexmark devices on dedicated VLANs or network segments with strict access controls to limit their ability to reach sensitive internal resources. 2. Access Control Lists (ACLs): Implement ACLs on network devices to restrict outbound HTTP/HTTPS requests from Lexmark devices to only trusted destinations. 3. Monitor Network Traffic: Deploy network monitoring and intrusion detection systems to detect unusual outbound requests originating from Lexmark devices. 4. Firmware Updates: Regularly check Lexmark's official channels for firmware updates or security patches addressing this SSRF vulnerability and apply them promptly once available. 5. Disable Unnecessary Services: Where possible, disable or restrict the embedded web server functionality or remote management interfaces on Lexmark devices to reduce attack surface. 6. Incident Response Preparedness: Develop and test incident response plans that include scenarios involving compromised network devices such as printers. 7. Vendor Engagement: Engage with Lexmark support to obtain detailed vulnerability information and timelines for patch releases. 8. Internal Network Hardening: Harden internal services to require strong authentication and limit exposure even if accessed via SSRF, reducing the potential impact of exploitation.