CVE-2025-30753 in WebLogic Server
Summary
by MITRE • 07/15/2025
Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Core). Supported versions that are affected are 12.2.1.4.0, 14.1.1.0.0 and 14.1.2.0.0. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle WebLogic Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle WebLogic Server. CVSS 3.1 Base Score 6.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).
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Analysis
by VulDB Data Team • 07/25/2025
The vulnerability identified as CVE-2025-30753 represents a significant availability threat within Oracle WebLogic Server, specifically affecting versions 12.2.1.4.0, 14.1.1.0.0, and 14.1.2.0.0 within the Core component of Oracle Fusion Middleware. This flaw manifests as an easily exploitable weakness that enables attackers with minimal privileges to initiate network-based attacks through HTTP protocols, making it particularly dangerous in environments where WebLogic Server operates with exposed network interfaces. The vulnerability's classification as low privilege attack vector means that even users with limited access rights can potentially leverage this weakness, significantly expanding the potential threat surface. The CVSS 3.1 scoring system rates this vulnerability at 6.5 out of 10, with the primary impact category being availability, indicating that successful exploitation can lead to complete denial of service conditions that may cause system hangs or frequent crashes.
The technical nature of this vulnerability stems from insufficient input validation or improper handling of specific HTTP requests within the WebLogic Server's core processing mechanisms. Attackers can craft malicious HTTP requests that trigger memory corruption or resource exhaustion conditions within the server's processing pipeline, ultimately leading to system instability. This type of vulnerability typically falls under CWE-129, which encompasses issues related to improper validation of input boundaries, or potentially CWE-476, concerning null pointer dereferences that can occur when processing malformed requests. The attack vector requires only network connectivity and does not demand specialized tools or extensive knowledge of the system internals, making it accessible to a broad range of threat actors. The vulnerability's impact extends beyond simple service interruption, as the described complete denial of service conditions can result in prolonged system unavailability that disrupts business operations and may require manual intervention to restore normal service.
The operational implications of CVE-2025-30753 are particularly severe for organizations relying on Oracle WebLogic Server for critical business applications, as the vulnerability can be exploited to cause sustained service disruption without requiring high-level privileges or specialized attack capabilities. The availability impact rating of CVSS 3.1 indicates that this vulnerability can be leveraged to create complete system crashes that may require system restarts or manual recovery procedures, potentially leading to extended downtime and service degradation. Organizations running affected versions of WebLogic Server should consider the potential for cascading failures if the server hosts critical applications or serves as a backend component for other services. The vulnerability's ability to cause frequently repeatable crashes suggests that attackers could maintain persistent disruption of services through repeated exploitation attempts, making it particularly challenging to defend against without proper patching or mitigation measures.
Mitigation strategies for this vulnerability should prioritize immediate patch deployment from Oracle, as the availability of security updates is crucial to addressing the root cause of the weakness. Organizations should implement network segmentation to limit direct access to WebLogic Server instances, particularly when they are not required to be accessible from external networks. The deployment of web application firewalls and intrusion detection systems can provide additional layers of protection by monitoring for suspicious HTTP patterns that may indicate exploitation attempts. Security teams should also conduct thorough network monitoring to detect potential exploitation activities, as the vulnerability's ease of exploitation means that attackers may attempt to leverage it without extensive reconnaissance. According to ATT&CK framework, this vulnerability would map to techniques involving service stoppage or denial of service conditions, potentially falling under the T1499 category for network denial of service attacks. Organizations should also consider implementing access controls and authentication measures to reduce the attack surface, as the low privilege requirement for exploitation makes this vulnerability particularly concerning for environments where access controls may be insufficient. The vulnerability's impact on system availability makes it essential for organizations to have robust incident response procedures in place to address potential exploitation attempts and ensure rapid recovery from any service disruption that may occur.