CVE-2026-83027 in Identity Manager Connector
Summary
by MITRE • 09/16/2026
Vulnerability in the Oracle Identity Manager Connector product of Oracle Fusion Middleware (component: Core). Supported versions that are affected are 12.2.1.4.0 and 14.1.2.1.0. Easily exploitable vulnerability allows unauthenticated attacker with access to the physical communication segment attached to the hardware where the Oracle Identity Manager Connector executes to compromise Oracle Identity Manager Connector. While the vulnerability is in Oracle Identity Manager Connector, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Oracle Identity Manager Connector accessible data as well as unauthorized access to critical data or complete access to all Oracle Identity Manager Connector accessible data. CVSS 3.1 Base Score 9.3 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N).
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Analysis
by VulDB Data Team • 09/16/2026
The identified vulnerability resides within the Core component of Oracle Identity Manager Connector, a critical element of the Oracle Fusion Middleware suite affecting versions 12.2.1.4.0 and 14.1.2.1.0. This security flaw represents a significant risk to organizations relying on these specific releases for identity management operations. The vulnerability is characterized by its ease of exploitation, allowing an unauthenticated attacker who has established access to the physical communication segment connected to the hardware hosting the Oracle Identity Manager Connector to compromise the system. This requirement for local network or physical layer access defines the attack vector as adjacent, which aligns with the CVSS 3.1 metric AV:A indicating that the vulnerability can be exploited by an adversary situated on the same shared logical network or broadcast domain, such as a VLAN or switch segment, without needing to traverse external firewalls or routers.
The technical nature of this flaw enables unauthorized creation, deletion, or modification of critical data within the Oracle Identity Manager Connector environment. Furthermore, it grants attackers the ability to gain complete access to all data accessible by the connector. This level of compromise directly impacts both confidentiality and integrity, as reflected in the high CVSS 3.1 Base Score of 9.3. The specific vector string (CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N) highlights that while availability is not immediately impacted by this specific exploit path, the integrity and confidentiality impacts are severe. An attacker can manipulate identity records, alter access control policies, or exfiltrate sensitive user credentials and personal identifiable information stored within the connector's scope. The low complexity of exploitation means that specialized skills or conditions are not required to leverage this flaw once network adjacency is achieved.
A critical aspect of this vulnerability is its potential for scope change during an attack sequence. Although the initial point of entry is the Oracle Identity Manager Connector, the successful compromise can significantly impact additional products within the broader Oracle Fusion Middleware ecosystem. This lateral movement capability arises because identity management systems often serve as central hubs for authentication and authorization across multiple enterprise applications. By compromising the connector, an attacker may gain a foothold that allows them to pivot into other connected services, databases, or directory servers, thereby expanding their access beyond the initial target. This cascading effect underscores the importance of treating identity infrastructure with heightened security controls due to its central role in organizational trust models.
From a classification perspective, this vulnerability aligns with CWE-287, which covers Improper Authentication, as it allows unauthenticated actors to perform privileged actions when network adjacency is present. It also relates to CWE-359, the Exposure of Private Information to an Unauthorized Actor, due to the unauthorized access capabilities granted by the flaw. In terms of offensive security frameworks, this vulnerability facilitates techniques associated with MITRE ATT&CK T1078, Valid Accounts, if the compromised connector allows for credential theft or impersonation, and potentially T1546, Event Triggered Execution, if the compromise involves modifying system processes to maintain persistence. The adjacent network access requirement places it in a category of vulnerabilities that are often mitigated through strict network segmentation rather than purely software patches alone.
To mitigate this risk, organizations must implement robust network segmentation strategies for systems hosting Oracle Identity Manager Connectors. These components should reside on isolated VLANs or subnets with strictly controlled access lists that permit communication only from authorized management stations and necessary application servers. Physical security of the hardware is also paramount, as the vulnerability exploits physical communication segments; therefore, restricting physical access to data centers and network closets reduces the attack surface for adjacent attackers. Additionally, deploying intrusion detection systems capable of monitoring lateral movement and anomalous traffic patterns on these specific segments can help detect exploitation attempts early. Ensuring that all Oracle Fusion Middleware components are updated to versions where this vulnerability is patched remains the primary long-term remediation strategy, alongside enforcing multi-factor authentication and least privilege principles for any administrative interfaces associated with identity management tools.