CVE-2026-101526 in Enterprise Manager for Siebel
Summary
by MITRE • 10/21/2026
Vulnerability in the Oracle Enterprise Manager for Siebel product of Oracle Enterprise Manager (component: Configuration Management). Supported versions that are affected are 13.5 and 24.1. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle Enterprise Manager for Siebel. Successful attacks of this vulnerability can result in takeover of Oracle Enterprise Manager for Siebel. 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 • 10/21/2026
The identified vulnerability resides within the Configuration Management component of Oracle Enterprise Manager for Siebel, specifically affecting versions 13.5 and 24.1. This security flaw represents a critical risk to organizations relying on this platform for managing their enterprise infrastructure. The core technical issue stems from an insufficient access control mechanism or improper authorization check within the HTTP-based interface used by the Configuration Management module. Because the vulnerability is easily exploitable, it does not require complex attack vectors or user interaction, allowing even low-privileged attackers with network access to initiate successful exploitation attempts. This characteristic significantly lowers the barrier for entry, enabling adversaries who have gained a foothold in the internal network or through other means to escalate their privileges and compromise the integrity of the management system.
From an operational perspective, the impact of this vulnerability is severe due to its high availability and confidentiality scores as defined by the CVSS 3.1 metric. A successful exploitation allows an attacker to take complete control over Oracle Enterprise Manager for Siebel. This level of access effectively grants the adversary administrative privileges within the management console, which serves as a central hub for monitoring and configuring enterprise systems. Consequently, this can lead to unauthorized modifications of system configurations, exfiltration of sensitive data managed by the platform, or disruption of critical business operations through denial-of-service actions. The ability to alter configuration settings may also allow attackers to establish persistent backdoors, pivot into other connected network segments, or manipulate monitoring alerts to hide further malicious activities from security teams.
The vulnerability aligns with CWE-269, which classifies Improper Privilege Assignment, and potentially CWE-862, Missing Authorization, depending on the specific implementation details of how access was not properly validated against user roles. In terms of adversary tactics, this flaw facilitates lateral movement within a network environment by providing an easy path to compromise a high-value target like Oracle Enterprise Manager. It supports techniques associated with MITRE ATT&CK T1078, Valid Accounts, as attackers can leverage compromised low-privileged credentials to gain higher-level access, and potentially T1546, Event Triggered Execution, if the configuration changes involve setting up scheduled tasks or services for persistence. The network-based nature of the attack vector means that it is particularly dangerous in environments where internal segmentation policies are weak or non-existent between user workstations and management servers.
Mitigation strategies must prioritize immediate patching to address this critical flaw. Organizations should apply the latest security updates provided by Oracle for versions 13.5 and 24.1 as soon as they become available from official channels. In addition to applying patches, it is crucial to review network segmentation policies to ensure that access to Oracle Enterprise Manager interfaces is restricted to authorized management networks only. Implementing strict firewall rules to limit HTTP traffic to this component can reduce the attack surface for external or internal attackers. Furthermore, enforcing multi-factor authentication and ensuring that all accounts with administrative capabilities adhere to the principle of least privilege will help mitigate the risk even if such vulnerabilities are present in other components. Regular vulnerability scanning and continuous monitoring of access logs for anomalous behavior related to configuration changes should also be implemented to detect potential exploitation attempts early.