CVE-2025-60007 is a vulnerability classified under CWE-476 (NULL Pointer Dereference) found in the chassis daemon (chassisd) component of Juniper Networks Junos OS, specifically impacting MX, SRX, and EX Series devices. The flaw arises when a local user with low privileges executes the 'show chassis' command with specially crafted options, causing the chassisd process to dereference a NULL pointer, leading to a crash and automatic restart of the daemon. This crash triggers the reinitialization of all chassis components except the Routing Engine (RE), resulting in a temporary but complete service outage on the affected device. The outage impacts network availability as critical chassis components are reset, though the system recovers automatically without manual intervention. The vulnerability affects all Junos OS versions before 22.4R3-S8, 23.2 versions before 23.2R2-S5, 23.4 versions before 23.4R2-S6, 24.2 versions before 24.2R2-S2, and 24.4 versions before 24.4R2. The CVSS v3.1 score is 5.5 (medium severity), reflecting that the attack vector is local (AV:L), requires low privileges (PR:L), no user interaction (UI:N), and impacts availability only (A:H) without affecting confidentiality or integrity. No public exploits have been reported, but the vulnerability poses a risk of denial-of-service in environments where local access is possible. The vulnerability is significant for network infrastructure relying on Juniper devices, as it can cause temporary network outages and service disruptions.

For European organizations, the primary impact of CVE-2025-60007 is the potential for network downtime due to denial-of-service conditions on critical Juniper MX, SRX, and EX Series devices. These devices are widely used in enterprise, service provider, and government networks across Europe for routing, security, and switching functions. A successful exploitation could disrupt network availability, affecting business operations, communications, and critical services. Although the system recovers automatically, the outage duration and frequency could degrade service quality and reliability. Organizations with strict uptime requirements, such as financial institutions, healthcare providers, and telecommunications companies, may experience operational and reputational damage. The requirement for local access limits remote exploitation risk, but insider threats or compromised internal systems could leverage this vulnerability. The lack of impact on confidentiality and integrity reduces risks of data breaches but does not eliminate operational risks. Overall, the vulnerability poses a moderate risk to network stability and continuity in European environments using affected Juniper devices.

European organizations should implement the following specific mitigation measures: 1) Immediately identify and inventory all Juniper MX, SRX, and EX Series devices running affected Junos OS versions. 2) Prioritize patching by upgrading to the fixed versions: 22.4R3-S8 or later, 23.2R2-S5 or later, 23.4R2-S6 or later, 24.2R2-S2 or later, and 24.4R2 or later as applicable. 3) Restrict local access to network devices by enforcing strict access controls, including limiting console and SSH access to authorized personnel only. 4) Monitor device logs and system behavior for unexpected crashes or restarts of the chassisd process to detect potential exploitation attempts. 5) Employ network segmentation to isolate management interfaces and reduce the attack surface for local attackers. 6) Implement multi-factor authentication and strong credential policies to reduce the risk of unauthorized local access. 7) Conduct regular security awareness training to inform administrators about the risks of executing commands with untrusted input. 8) Develop and test incident response plans to quickly recover from potential service outages caused by this vulnerability. These targeted actions go beyond generic advice by focusing on access control, monitoring, and patch prioritization specific to this vulnerability and affected devices.