CVE-2026-62639 in Reports Developer
Summary
by MITRE • 08/19/2026
Vulnerability in the Oracle Reports Developer product of Oracle Fusion Middleware (component: Security and Authentication). The supported version that is affected is 14.1.2.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via CORBA to compromise Oracle Reports Developer. Successful attacks of this vulnerability can result in takeover of Oracle Reports Developer. CVSS 3.1 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
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Analysis
by VulDB Data Team • 08/19/2026
The identified vulnerability resides within the Oracle Reports Developer component of Oracle Fusion Middleware version 14.1.2.0.0, specifically affecting its Security and Authentication mechanisms. This flaw represents a critical security deficiency that undermines the fundamental integrity of the application's access control models. The issue is characterized by an authentication bypass or insufficient validation process that allows external entities to interact with sensitive system functions without providing valid credentials. In enterprise environments where Oracle Fusion Middleware serves as a backbone for reporting infrastructure, such a weakness poses a severe risk to operational continuity and data security.
The technical nature of this flaw involves the Common Object Request Broker Architecture (CORBA) interface, which is exposed to network access. CORBA facilitates distributed object communication across different platforms and programming languages, but it also presents an expanded attack surface if not properly secured. The vulnerability allows unauthenticated attackers with network connectivity to exploit weaknesses in how the system handles incoming requests over this protocol. By leveraging specific malformed or crafted inputs sent via CORBA, an attacker can bypass authentication checks entirely. This capability stems from a failure to enforce strict identity verification before processing administrative or sensitive operations within the Reports Developer engine.
From an operational perspective, the impact of successful exploitation is catastrophic for system integrity and availability. An unauthenticated actor with network access can achieve complete takeover of the Oracle Reports Developer instance. This level of compromise means the attacker gains full control over the application environment, enabling them to execute arbitrary code, modify or delete critical reports and configurations, and potentially pivot further into the internal network infrastructure. The high severity is reflected in a CVSS 3.1 Base Score of 9.8 out of 10, indicating that all three pillars of security—confidentiality, integrity, and availability—are severely compromised. Attackers can exfiltrate sensitive data contained within reports, alter output to mislead stakeholders, or disrupt reporting services entirely by crashing the service or locking out legitimate users.
This vulnerability aligns with Common Weakness Enumeration (CWE) categories such as CWE-287: Improper Authentication and CWE-306: Missing Authentication for Critical Function. The exploitation method corresponds to MITRE ATT&CK techniques involving initial access through network services, specifically targeting application layer protocols like CORBA which may be less monitored than standard web traffic depending on the organization's security posture. The lack of required user interaction (UI:N) and low attack complexity (AC:L) further exacerbate the risk, allowing for automated exploitation by threat actors scanning for vulnerable instances on public or internal networks.
Mitigation strategies must prioritize immediate remediation due to the high severity score and ease of exploitation. Oracle has likely released patches addressing this specific authentication flaw in subsequent updates of Fusion Middleware 14.1.2.x. Organizations should apply these security patches immediately to close the vulnerability at the source code level. In scenarios where patching is not immediately feasible, network-level controls are essential. Implementing strict firewall rules to restrict access to CORBA ports only from trusted internal IP addresses can significantly reduce exposure. Additionally, deploying Web Application Firewalls (WAF) or intrusion detection systems capable of identifying anomalous CORBA traffic patterns may help detect and block exploitation attempts before they succeed. Regular auditing of authentication logs for failed login attempts or unusual activity on the Reports Developer interface is also recommended to monitor for potential probing activities by attackers.