CVE-2025-61752 is a vulnerability identified in Oracle WebLogic Server, specifically affecting versions 14.1.1.0.0 and 14.1.2.0.0. The flaw resides in the handling of HTTP/2 requests, allowing an unauthenticated attacker with network access to exploit the vulnerability without any user interaction or privileges. The attack vector is network-based (AV:N), with low attack complexity (AC:L), requiring no privileges (PR:N) or user interaction (UI:N). The vulnerability does not compromise confidentiality or integrity but severely impacts availability by enabling an attacker to cause the server to hang or crash repeatedly, resulting in a complete denial of service (DoS). This is categorized under CWE-306, indicating an authorization bypass or insufficient access control issue. Although no active exploits have been reported, the vulnerability is considered easily exploitable due to its network accessibility and lack of authentication requirements. Oracle WebLogic Server is a widely used middleware platform for enterprise applications, making this vulnerability significant for organizations relying on it for critical business functions. The absence of patches at the time of disclosure necessitates immediate attention to mitigate potential exploitation risks.

For European organizations, the primary impact of CVE-2025-61752 is the potential disruption of critical business applications and services hosted on Oracle WebLogic Server. This can lead to operational downtime, loss of productivity, and potential financial losses. Sectors such as finance, telecommunications, government, and manufacturing that depend heavily on Oracle WebLogic for middleware services are particularly vulnerable. The denial of service could also affect customer-facing services, damaging reputation and trust. Additionally, prolonged outages may hinder compliance with regulatory requirements related to service availability and business continuity. Since the vulnerability does not affect data confidentiality or integrity, the risk of data breaches is low; however, the availability impact alone can have severe consequences for mission-critical environments.

1. Apply official Oracle patches immediately once they become available to address CVE-2025-61752. 2. Until patches are released, restrict HTTP/2 traffic to Oracle WebLogic Server instances by implementing network-level controls such as firewalls or access control lists (ACLs) to limit access to trusted IP addresses and internal networks only. 3. Disable HTTP/2 support on Oracle WebLogic Server if feasible, especially in environments where it is not required. 4. Monitor WebLogic Server logs and network traffic for unusual patterns indicative of exploitation attempts, such as repeated crashes or hangs triggered by HTTP/2 requests. 5. Implement robust incident response plans to quickly detect and respond to potential denial of service events. 6. Conduct regular vulnerability assessments and penetration testing focusing on middleware components to identify and remediate similar weaknesses proactively. 7. Educate IT and security teams about this vulnerability and ensure they are prepared to respond to related incidents.