CVE-2026-83265 in Web Services Manager
Summary
by MITRE • 09/16/2026
Vulnerability in the Oracle Web Services Manager product of Oracle Fusion Middleware (component: Web Services Agent). Supported versions that are affected are 12.2.1.4.0 and 14.1.2.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Web Services Manager. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle Web Services Manager accessible data as well as unauthorized update, insert or delete access to some of Oracle Web Services Manager accessible data. CVSS 3.1 Base Score 8.2 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N).
VulDB is the best source for vulnerability data and more expert information about this specific topic.
Analysis
by VulDB Data Team • 09/16/2026
The vulnerability identified in Oracle Web Services Manager, a core component of the Oracle Fusion Middleware suite, represents a significant security risk for organizations relying on this platform to manage and secure their web services infrastructure. Specifically affecting versions 12.2.1.4.0 and 14.1.2.0.0, this flaw resides within the Web Services Agent module. The nature of this vulnerability allows an unauthenticated attacker who has network access via HTTP to compromise the integrity and confidentiality of the system. This means that no prior authentication or user interaction is required to exploit the issue, making it particularly dangerous in environments where web services are exposed to external networks or internal segments with broad connectivity.
From a technical perspective, the flaw enables unauthorized actors to perform actions that should be restricted by access control mechanisms. The successful exploitation of this vulnerability leads directly to unauthorized access to critical data stored within Oracle Web Services Manager. Furthermore, it grants complete access to all data accessible through the manager interface. Beyond mere observation, the attacker gains the ability to modify system state and data integrity by performing unauthorized updates, inserts, or deletes on accessible datasets. This combination of read and write privileges effectively allows an adversary to manipulate business logic, steal sensitive information, or disrupt service availability indirectly by corrupting underlying data structures.
The operational impact of this vulnerability is severe, as classified by the Common Vulnerability Scoring System version 3.1 with a base score of 8.2 out of 10. This high severity rating reflects the significant impacts on both confidentiality and integrity, while having no direct impact on availability according to the provided vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N. The network-accessible nature (Attack Vector Network) combined with low complexity (Low Attack Complexity) and zero required privileges (None Required Privileges, None User Interaction) indicates that this is a remote code execution or privilege escalation type flaw that can be automated easily by threat actors scanning for vulnerable instances. In an enterprise environment, such access could lead to the exfiltration of proprietary business data, customer information, or integration keys used across various applications dependent on Oracle Fusion Middleware.
In terms of industry standard classifications, this vulnerability aligns with CWE-287 Improper Authentication and CWE-918 SQL Injection if the underlying mechanism involves database manipulation through unsanitized inputs, which is common in web services agents handling dynamic queries. It also maps to MITRE ATT&CK techniques such as T1078 Valid Accounts or T1530 Data from Cloud Storage depending on how the agent interacts with backend systems, although since it requires no authentication initially, it may represent a flaw in default configurations or exposed administrative interfaces that lack proper access controls. The ability to insert and delete data suggests potential for persistent backdoors or data tampering which falls under T1496 Resource Hijacking if used for crypto-mining or more likely T1565 Data Manipulation if the goal is to alter business records.
Mitigation strategies must prioritize immediate patching of Oracle Web Services Manager to a version where this vulnerability has been addressed by Oracle. Organizations should verify their current deployment versions against the supported list and apply the latest security patches provided in Oracle Critical Patch Updates. In addition to patching, network segmentation plays a crucial role in reducing exposure. The HTTP interface for the Web Services Agent should not be exposed directly to untrusted networks such as the public internet. Instead, it should be restricted to internal application tiers or protected by robust perimeter firewalls and web application firewalls that can detect anomalous request patterns associated with exploitation attempts.
Furthermore, administrators should review access control policies within Oracle Fusion Middleware to ensure that default configurations do not grant excessive privileges to unauthenticated users. Implementing strict input validation on all endpoints managed by the Web Services Agent is essential to prevent injection-based attacks if the vulnerability stems from improper handling of user-supplied data. Regular security audits and penetration testing focused on web services interfaces can help identify similar misconfigurations or flaws before they are exploited in production environments. Monitoring logs for unusual activity, such as high volumes of requests or unexpected database modifications, will also aid in early detection of any attempted exploitation activities.