CVE-2025-59975 is an Uncontrolled Resource Consumption vulnerability (CWE-400) found in the HTTP daemon (httpd) component of Juniper Networks Junos Space, a network management platform. The flaw allows an unauthenticated attacker to flood the device with excessive inbound API calls, consuming all available system resources, specifically file handles. This resource exhaustion leads to a Denial of Service (DoS) condition by blocking legitimate management access via SSH and the WebUI. The attack vector is network-based and requires no authentication or user interaction, making it relatively easy to exploit remotely. The affected versions include all releases before 22.2R1 Patch V3 and versions from 23.1 up to but not including 23.1R1 Patch V3. Once the system is overwhelmed, recovery necessitates a manual reboot, causing potential operational downtime. The vulnerability has been assigned a CVSS v3.1 base score of 7.5, reflecting high severity due to its impact on availability and ease of exploitation. No public exploits or active exploitation in the wild have been reported to date. Juniper Networks has not provided patch links in the provided data, but users are advised to upgrade to the fixed versions or apply patches once available. This vulnerability highlights the risk of resource exhaustion attacks on critical network management infrastructure, which can disrupt network operations and incident response capabilities.

For European organizations, the impact of CVE-2025-59975 can be significant, especially for those relying on Junos Space for centralized network management, monitoring, and automation. A successful DoS attack can disrupt network visibility and control, delaying incident detection and remediation. This can lead to extended network outages, degraded service levels, and increased operational costs. Critical sectors such as telecommunications, finance, energy, and government agencies that depend on Juniper infrastructure may experience service interruptions affecting end-users and business continuity. The requirement for a manual reboot to restore functionality can increase downtime and operational overhead. Additionally, the inability to access management interfaces could hinder security operations and incident response during an ongoing attack or network event. Although confidentiality and integrity are not directly impacted, the availability disruption alone poses a substantial risk to organizational resilience and regulatory compliance, particularly under EU directives emphasizing network security and service continuity.

1. Apply official patches or upgrade Junos Space to versions 22.2R1 Patch V3 or later, or 23.1R1 Patch V3 or later as soon as they become available from Juniper Networks. 2. Implement network-level rate limiting and filtering on inbound API calls to Junos Space HTTP daemon to prevent flooding attacks. 3. Restrict access to Junos Space management interfaces by enforcing IP whitelisting and network segmentation, limiting exposure to trusted networks only. 4. Monitor system resource usage and file handle consumption proactively to detect abnormal spikes indicative of an attack. 5. Deploy intrusion detection/prevention systems (IDS/IPS) with signatures or heuristics to identify and block excessive API request patterns. 6. Establish robust incident response procedures to quickly reboot and recover affected systems if a DoS occurs. 7. Regularly audit and review network management platform exposure and harden configurations to minimize attack surface. 8. Coordinate with Juniper Networks support for guidance and timely updates regarding this vulnerability.