CVE-2025-13661 is a path traversal vulnerability classified under CWE-22 affecting Ivanti Endpoint Manager prior to version 2024 SU4 SR1. The flaw allows a remote attacker with valid authentication to write arbitrary files outside the designated directory structure by exploiting improper limitation of pathname inputs. This can lead to unauthorized file creation or modification anywhere on the file system accessible by the application, potentially enabling privilege escalation, code execution, or persistent backdoors. The attack vector requires network access and user interaction, with low complexity but some access control hurdles (low privileges needed). The vulnerability impacts confidentiality, integrity, and availability, as attackers can overwrite critical files, inject malicious code, or disrupt services. Although no public exploits are reported yet, the high CVSS score (7.1) reflects the serious nature of the flaw. Ivanti Endpoint Manager is widely used for centralized endpoint management, making this vulnerability a significant risk for enterprise environments. The lack of patch links suggests immediate mitigation relies on vendor updates and configuration hardening.

For European organizations, the impact of CVE-2025-13661 can be substantial. Successful exploitation could lead to unauthorized modification or creation of files on managed endpoints or servers, potentially resulting in system compromise, data breaches, or disruption of endpoint management services. This can affect operational continuity, especially in sectors relying heavily on endpoint security such as finance, healthcare, and critical infrastructure. Confidential information could be exposed or altered, integrity of systems undermined, and availability of management tools disrupted, complicating incident response and recovery. The requirement for authentication and user interaction limits but does not eliminate risk, as insider threats or compromised credentials could facilitate exploitation. The absence of known exploits suggests a window for proactive defense, but also the need for vigilance as attackers may develop exploits rapidly once details are public.

Organizations should immediately verify their Ivanti Endpoint Manager version and plan to upgrade to 2024 SU4 SR1 or later once available. Until patches are applied, implement strict access controls to limit who can authenticate and interact with the management interface. Enforce least privilege principles to reduce the impact of compromised accounts. Monitor logs for unusual file write activities or access patterns indicative of path traversal attempts. Employ network segmentation to restrict access to the management system from untrusted networks. Conduct regular audits of file system integrity on critical endpoints. Educate users about the risks of social engineering that could facilitate user interaction required for exploitation. Collaborate with Ivanti support for any available workarounds or mitigations. Finally, integrate this vulnerability into incident response plans to ensure rapid containment if exploitation is detected.