CVE-2025-62477 is a vulnerability identified in Oracle ZFS Storage Appliance Kit version 8.8, specifically within the Remote Replication component. The flaw allows an attacker with high privileges and network access via HTTP to cause the appliance to hang or crash repeatedly, resulting in a complete denial-of-service (DoS) condition. The vulnerability is classified under CWE-400, which relates to uncontrolled resource consumption leading to DoS. The CVSS 3.1 base score is 4.9, reflecting a medium severity primarily due to its impact on availability (A:H) without affecting confidentiality or integrity. The attack vector is network-based (AV:N), requires low attack complexity (AC:L), and necessitates high privileges (PR:H) but no user interaction (UI:N). The scope remains unchanged (S:U), meaning the impact is confined to the vulnerable component. No known exploits have been reported in the wild, and no patches are currently available. The vulnerability could be exploited by an insider or a compromised administrator to disrupt storage services, potentially impacting data replication and availability in enterprise environments relying on Oracle ZFS Storage Appliance Kit.

For European organizations, the primary impact of CVE-2025-62477 is operational disruption due to denial-of-service of critical storage infrastructure. Organizations using Oracle ZFS Storage Appliance Kit for data replication and storage management could experience downtime, affecting business continuity and data availability. This could be particularly damaging for sectors relying on high availability and data integrity, such as financial services, healthcare, telecommunications, and government agencies. Although the vulnerability does not lead to data breaches or integrity loss, the inability to access or replicate data could delay critical operations and recovery processes. The requirement for high privileges limits the risk of external attackers exploiting this vulnerability directly, but insider threats or compromised administrative accounts pose a significant risk. The absence of patches increases exposure time, necessitating immediate compensating controls to mitigate potential disruptions.

1. Restrict network access to the Oracle ZFS Storage Appliance Kit management interfaces, especially HTTP access, to trusted administrative networks only. 2. Enforce strict access controls and monitor administrative accounts to prevent privilege escalation or unauthorized access. 3. Implement network segmentation to isolate storage appliances from general user networks and limit exposure. 4. Continuously monitor appliance logs and performance metrics for signs of hangs, crashes, or abnormal behavior indicative of exploitation attempts. 5. Develop and test incident response plans specifically addressing storage appliance outages to minimize downtime impact. 6. Stay informed on Oracle security advisories and apply patches or updates promptly once they become available. 7. Consider deploying additional redundancy or failover mechanisms for critical storage functions to maintain availability during potential DoS events. 8. Conduct regular security audits and penetration testing focusing on storage infrastructure to identify and remediate privilege escalation risks.