CVE-2026-91501 in Identity Manager
Summary
by MITRE • 10/21/2026
Vulnerability in the Oracle Identity Manager product of Oracle Fusion Middleware (component: Installer). 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 logon to the infrastructure where Oracle Identity Manager executes to compromise Oracle Identity Manager. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle Identity Manager accessible data. CVSS 3.1 Base Score 5.5 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N).
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Analysis
by VulDB Data Team • 10/21/2026
The identified vulnerability resides within the Oracle Identity Manager product, specifically affecting its Installer component in versions 12.2.1.4.0 and 14.1.2.1.0 of the Oracle Fusion Middleware suite. This security flaw is classified as a low-privilege attack vector that requires an attacker to have valid logon credentials to the underlying infrastructure where the Oracle Identity Manager service executes. The nature of this vulnerability suggests a failure in proper access control or privilege separation during the installation or configuration phases, allowing authenticated users with limited privileges to escalate their rights or manipulate critical system components. This aligns closely with CWE-269, which addresses Improper Privilege Management, and potentially CWE-732, concerning Incorrect Permission Assignment for Critical Resource, as the installer may be exposing sensitive operations or data stores without enforcing strict role-based access controls appropriate for such high-level administrative tasks.
The operational impact of exploiting this vulnerability is significant due to the central role Oracle Identity Manager plays in enterprise identity and access management ecosystems. A successful exploitation allows an attacker with low privileges on the host infrastructure to compromise the integrity and confidentiality of the entire identity management system. The primary consequence, as indicated by the CVSS 3.1 base score of 5.5, is a high impact on confidentiality. This means that unauthorized actors can gain access to critical data stored within or managed by Oracle Identity Manager, including user credentials, authentication policies, and directory information. While immediate integrity and availability impacts are not explicitly highlighted in the vector as primary outcomes, the ability to read all accessible data effectively undermines the security posture of the organization by enabling further lateral movement, credential theft, and potential identity spoofing attacks against downstream applications that rely on this central authority for authentication decisions.
From a tactical perspective, this vulnerability maps to MITRE ATT&CK techniques related to Initial Access and Credential Access. Specifically, it relates to T1078 Valid Accounts, as the attack requires valid logon credentials, and potentially T1530 Data from Local System, given that the attacker can access data on the local infrastructure where the service runs. The requirement for low-privileged access makes this particularly dangerous in environments where developers or junior administrators have broad shell access to production servers but are not intended to interact with sensitive identity management configurations directly. Attackers could leverage existing compromised accounts or weak password policies to gain initial foothold and then exploit this installer flaw to exfiltrate sensitive identity data without triggering high-severity alerts associated with full administrative privilege escalation, thereby maintaining stealth while achieving substantial intelligence gathering objectives.
Mitigation strategies must focus on both immediate remediation and long-term architectural hardening. The primary defense is the application of vendor-provided patches or updates that address this specific installer vulnerability as soon as they are available from Oracle Support. In environments where patching is not immediately feasible, strict network segmentation should be enforced to isolate the Oracle Identity Manager infrastructure from general-purpose user workstations and less trusted networks. Access controls on the operating system level must be reviewed to ensure that only designated service accounts with minimal necessary privileges can interact with the installer components or configuration files. Additionally, implementing robust monitoring for unusual file access patterns within the installation directories of Oracle Fusion Middleware can help detect exploitation attempts early. Regular audits of user permissions and adherence to the principle of least privilege across all infrastructure layers are essential to prevent low-privileged actors from reaching this vulnerable component in the first place.