CVE-2026-83147 in PeopleSoft Enterprise FIN Inventory Brazil
Summary
by MITRE • 09/16/2026
Vulnerability in the PeopleSoft Enterprise FIN Inventory Brazil product of Oracle PeopleSoft (component: Inventory). The supported version that is affected is 9.1. Easily exploitable vulnerability allows low privileged attacker with logon to the infrastructure where PeopleSoft Enterprise FIN Inventory Brazil executes to compromise PeopleSoft Enterprise FIN Inventory Brazil. Successful attacks of this vulnerability can result in takeover of PeopleSoft Enterprise FIN Inventory Brazil. CVSS 3.1 Base Score 7.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/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 vulnerability identified in Oracle PeopleSoft Enterprise FIN Inventory Brazil version 9.1 represents a critical security flaw within the inventory management component of this enterprise resource planning suite. This specific defect allows for unauthorized access and subsequent compromise of the application environment, posing significant risks to organizations relying on this system for financial and operational data integrity. The affected software is part of Oracle's broader PeopleSoft ecosystem, which handles complex business processes including supply chain management and financial reporting. Given that version 9.1 is an older release, it may lack modern security controls or patches available in newer iterations, making it a prime target for exploitation by adversaries seeking to infiltrate corporate networks through trusted enterprise applications.
From a technical perspective, the core issue stems from insufficient access control mechanisms within the Inventory component. The vulnerability enables low-privileged attackers who have valid logon credentials on the underlying infrastructure to escalate their privileges or execute arbitrary actions that they should not be permitted to perform. This suggests a failure in enforcing proper authorization checks at the application logic level rather than just network or operating system levels. Because the attacker only requires local access to the infrastructure where PeopleSoft executes, this indicates that perimeter defenses such as firewalls may not fully mitigate the risk if an insider threat or a compromised host within the internal network is utilized. The absence of required user interaction further simplifies the attack vector, allowing for automated exploitation without needing social engineering tactics like phishing.
The operational impact of successfully exploiting this vulnerability is severe, characterized by a complete takeover of the PeopleSoft Enterprise FIN Inventory Brazil application environment. With a CVSS 3.1 Base Score of 7.8, the severity rating reflects high impacts across confidentiality, integrity, and availability. An attacker gaining control can exfiltrate sensitive financial data, alter inventory records to facilitate fraud or supply chain disruption, and potentially disrupt business operations by rendering the system unavailable. This level of compromise undermines trust in enterprise systems and can lead to significant regulatory penalties under standards such as GDPR or SOCA if personal or financial data is exposed. The ability to modify integrity-related fields means that audit trails could be tampered with, obscuring forensic investigations and allowing malicious activities to persist undetected for extended periods.
In terms of industry standard classifications, this vulnerability aligns closely with CWE-269 Improper Privilege Management, as it involves a low-privileged user gaining higher-level access or control than intended. It also relates to CWE-862 Missing Authorization, where the application fails to verify that the authenticated user has sufficient permissions for the requested action. From an offensive security framework perspective, this falls under MITRE ATT&CK techniques related to Initial Access via Valid Accounts and Privilege Escalation within a local environment. Attackers often leverage such vulnerabilities as part of a broader campaign involving lateral movement from compromised endpoints to critical backend servers hosting enterprise applications like PeopleSoft.
Mitigation strategies must focus on both immediate remediation and long-term architectural improvements. The primary recommendation is to apply the latest security patches provided by Oracle for version 9.1, if available, or consider upgrading to a supported release where such flaws have been addressed through rigorous code review and secure development lifecycle practices. If patching is not immediately feasible, organizations should implement strict network segmentation to isolate PeopleSoft servers from general corporate networks, ensuring that only authorized management interfaces can reach the application tier. Additionally, enforcing multi-factor authentication for all administrative accounts and applying principle of least privilege across user roles can reduce the attack surface. Regular vulnerability assessments and penetration testing focused on enterprise applications are essential to identify similar misconfigurations or logic flaws before they are exploited in production environments.