CVE-2026-83464 in Mobile Application Server
Summary
by MITRE • 09/16/2026
Vulnerability in the Oracle Mobile Application Server product of Oracle E-Business Suite (component: MWA Terminal Server). Supported versions that are affected are 12.2.3-12.2.15. Difficult to exploit vulnerability allows unauthenticated attacker with network access via TCP to compromise Oracle Mobile Application Server. Successful attacks of this vulnerability can result in takeover of Oracle Mobile Application Server. CVSS 3.1 Base Score 8.1 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H).
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Analysis
by VulDB Data Team • 09/16/2026
The Oracle Mobile Application Server component within the Oracle E-Business Suite presents a critical security risk for organizations relying on this platform for mobile enterprise operations. The vulnerability affects supported versions ranging from 12.2.3 through 12.2.15, indicating that a significant portion of deployed environments may be exposed to exploitation if patches have not been applied. This flaw resides within the MWA Terminal Server subsystem, which serves as the interface for mobile devices connecting to backend enterprise resources. The presence of this vulnerability in such a core component underscores the importance of rigorous input validation and access control mechanisms in middleware software that handles sensitive business data over network connections.
From a technical perspective, the defect allows an unauthenticated attacker with network access via TCP to compromise the Oracle Mobile Application Server. Although the exploit difficulty is classified as high, meaning it requires specific conditions or complex sequences to trigger successfully, the impact of a successful attack is severe. The vulnerability likely stems from improper handling of input data or state management within the terminal server protocol implementation, potentially allowing an attacker to bypass authentication checks or execute arbitrary commands through crafted network packets. This aligns with common weaknesses found in legacy enterprise middleware where older protocols may lack modern security controls such as robust session validation or parameter sanitization.
The operational impact of this vulnerability is substantial, characterized by a CVSS 3.1 Base Score of 8.1, which denotes a High severity rating. The vector string (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H) reveals that the attack can be conducted remotely over the network without requiring user interaction or prior authentication privileges. Once exploited, an attacker gains full control over the Oracle Mobile Application Server instance. This level of compromise enables unauthorized access to confidential data stored within the E-Business Suite, manipulation of system integrity through modification of business logic or configurations, and disruption of availability by crashing services or rendering mobile applications unusable for end-users. Such a breach could lead to significant financial loss, regulatory penalties under standards like GDPR or HIPAA if personal health information is involved, and reputational damage due to the exposure of proprietary corporate data.
In terms of industry standard classifications, this vulnerability maps closely to CWE-287 Improper Authentication, as it allows unauthenticated access, and potentially CWE-94 Command Injection if arbitrary code execution is possible through input manipulation. From an adversary behavior perspective, according to MITRE ATT&CK, this aligns with Initial Access techniques such as Exploit Public-Facing Application (T1190) or Network Service Scanning followed by exploitation of known vulnerabilities in services running on open ports. Attackers would likely leverage automated scanning tools to identify vulnerable instances and then deploy specialized exploit code to achieve remote code execution or privilege escalation, facilitating lateral movement within the corporate network once the initial foothold is established.
Mitigation strategies must prioritize immediate patching where feasible. Organizations should apply the latest security patches provided by Oracle for their specific version of E-Business Suite, ensuring that the MWA Terminal Server component is updated to a version free from this flaw. In environments where patching cannot be performed immediately due to operational constraints or testing requirements, network segmentation and firewall rules should be implemented to restrict TCP access to the vulnerable service ports exclusively to trusted IP addresses or internal subnets. Additionally, deploying Web Application Firewalls with signatures capable of detecting exploitation attempts for this specific vulnerability can provide an additional layer of defense by blocking malicious payloads before they reach the application server. Regular security audits and penetration testing focused on mobile interface components are also recommended to identify similar weaknesses in other parts of the infrastructure.