CVE-2026-83340 in Identity Manager
Summary
by MITRE • 09/16/2026
Vulnerability in the Oracle Identity Manager product of Oracle Fusion Middleware (component: Security). Supported versions that are affected are 12.2.1.4.0 and 14.1.2.1.0. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle Identity Manager. Successful attacks of this vulnerability can result in takeover of Oracle Identity Manager. CVSS 3.1 Base Score 8.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).
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Analysis
by VulDB Data Team • 09/16/2026
The identified vulnerability resides within the Security component of Oracle Identity Manager, a critical enterprise identity governance solution that is part of the broader Oracle Fusion Middleware suite. This flaw affects specific supported versions, namely 12.2.1.4.0 and 14.1.2.1.0, indicating that even currently maintained software releases are susceptible to exploitation. The nature of this vulnerability allows for remote code execution or privilege escalation through a network-based attack vector accessible via the HTTP protocol. This means an attacker does not need physical access to the system nor do they require complex social engineering tactics involving user interaction, as the exploit can be triggered remotely over standard web connections.
From a technical perspective, the core issue stems from insufficient validation or authentication mechanisms within the security handling routines of Oracle Identity Manager. The vulnerability enables low-privileged attackers who possess network connectivity to compromise the integrity and confidentiality of the system. In practical terms, this often involves manipulating input data sent through HTTP requests in ways that bypass existing access controls or trigger unintended code paths. Because the attacker only requires low privileges initially, the barrier to entry is significantly reduced compared to vulnerabilities requiring administrative rights. The exploitation path leverages standard web protocols, making it highly accessible and difficult to detect by traditional network perimeter defenses that do not inspect application-layer payloads deeply.
The operational impact of this vulnerability is severe, as evidenced by a CVSS 3.1 Base Score of 8.8, which classifies the risk as High. The vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) highlights that while the attack requires low privileges and has low complexity, it does not require user interaction and affects all three pillars of security: confidentiality, integrity, and availability. A successful exploitation can lead to a complete takeover of Oracle Identity Manager. This implies that an attacker could potentially access sensitive identity data, modify authentication policies, create unauthorized administrative accounts, or disrupt the service entirely by crashing critical components. Given that Oracle Identity Manager often serves as the central hub for managing user identities across an organization's IT infrastructure, compromising it can serve as a pivot point for broader network compromise, allowing lateral movement to other systems and escalation of privileges beyond the initial low-privileged access.
This vulnerability aligns with several common weakness enumerations (CWE) typically associated with web application security flaws. It is closely related to CWE-287, which describes Improper Authentication, where an attacker fails to correctly prove their identity to a computer system. Additionally, it may involve elements of CWE-918, Server-Side Request Forgery (SSRF), if the vulnerability allows the server to make requests on behalf of the user to internal resources that should not be accessible. From a tactical standpoint in the MITRE ATT&CK framework, this behavior maps to techniques such as T1078 Valid Accounts, where attackers use legitimate credentials or low-level access to gain foothold, and potentially T1529 System Shutdown or Reboot if availability is targeted, though the primary concern here is unauthorized control. The lack of user interaction requirement (UI:N) further emphasizes its suitability for automated exploitation tools commonly found in threat actor arsenals.
Mitigation strategies must be implemented promptly to address this critical risk. Oracle has likely released a patch or update addressing these specific versions; therefore, applying the latest security patches provided by Oracle is the primary remediation step. Organizations should verify their current version of Oracle Identity Manager and apply the relevant interim fixes or cumulative updates as soon as they are available from official support channels. In addition to patching, network segmentation plays a crucial role in limiting exposure. Administrators should ensure that HTTP access to Oracle Identity Manager components is restricted to trusted networks only, utilizing firewalls and web application firewalls (WAFs) to filter malicious traffic patterns associated with exploitation attempts. Implementing strict input validation at the gateway level can also help mitigate some aspects of this vulnerability by blocking malformed or suspicious HTTP requests before they reach the vulnerable application logic.
Furthermore, organizations should review their access control policies within Oracle Identity Manager itself. Since low-privileged accounts are sufficient for exploitation, it is imperative to audit user permissions and ensure that no unnecessary privileges are granted to service accounts or regular users who do not require administrative functions. Enforcing multi-factor authentication (MFA) for all administrative interfaces can add a layer of defense-in-depth, although this may not directly prevent the initial exploit if the vulnerability allows session hijacking or token manipulation. Continuous monitoring and logging should be enhanced to detect anomalous activities that might indicate an attempted exploitation, such as unusual login patterns or unexpected changes in identity configurations. Regular security assessments and penetration testing focused on web application vulnerabilities will help identify similar weaknesses before they can be exploited by malicious actors.