CVE-2026-83386 in HRMS
Summary
by MITRE • 10/21/2026
Vulnerability in the Oracle HRMS (US) product of Oracle E-Business Suite (component: Internal Operations). Supported versions that are affected are 12.2.3-12.2.15. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle HRMS (US). Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle HRMS (US) accessible data. CVSS 3.1 Base Score 6.5 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/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 Internal Operations component of Oracle HRMS for US, a critical module within the broader Oracle E-Business Suite ecosystem. This security flaw affects multiple supported releases, specifically versions 12.2.3 through 12.2.15, indicating that it is not an isolated incident in legacy code but rather a systemic issue present across several major updates of the platform. The vulnerability allows for unauthorized access to sensitive human resources data, which typically includes personally identifiable information, salary details, performance reviews, and other confidential employee records. Given the high value of such data on the black market and its potential use for identity theft or corporate espionage, this represents a significant risk to organizational integrity and compliance with privacy regulations such as GDPR or CCPA.
From a technical perspective, the flaw is characterized by an easily exploitable condition that requires only low-privileged access over a network connection via HTTP. This means that an attacker does not need administrative credentials or complex social engineering tactics to initiate an exploit; rather, basic authentication combined with knowledge of the vulnerability's mechanics is sufficient for compromise. The attack vector is classified as Network (AV:N) with Low Complexity (AC:L), and it requires no user interaction (UI:N). Crucially, the privilege requirement is Low (PR:L), meaning that even a standard employee account or a compromised low-level service account can be leveraged to trigger the vulnerability. This accessibility significantly lowers the barrier for entry compared to vulnerabilities requiring high privileges or physical access.
The operational impact of this vulnerability is primarily focused on confidentiality, as indicated by the CVSS 3.1 base score of 6.5 and its vector components which show High Confidentiality (C:H) impacts but no direct Impact on Integrity or Availability in the primary description. Successful exploitation allows an attacker to view critical data that should be restricted based on role-based access controls. In some scenarios, this can escalate to complete access to all Oracle HRMS accessible data if the underlying flaw permits privilege escalation through improper session handling or insecure direct object references within the internal operations layer. This comprehensive exposure undermines the fundamental security principle of least privilege and exposes the organization to substantial legal and reputational damage due to the breach of sensitive personal information.
In terms of industry standard classifications, this vulnerability aligns with CWE-284 Improper Access Control, as it involves a failure in enforcing restrictions on what authenticated users can do or view. It also maps closely to MITRE ATT&CK technique T1078 Valid Accounts, where attackers use legitimate credentials to gain access and move laterally within the network environment without triggering typical intrusion detection alerts associated with brute-force attacks. The reliance on HTTP rather than HTTPS for exploitation in some contexts may further suggest weaknesses in transport layer security enforcement or configuration errors that allow unencrypted communication channels to be abused for data exfiltration, potentially linking to CWE-319 Cleartext Transmission of Sensitive Information if the network path is not properly secured.
Mitigation strategies must prioritize immediate patching and access restriction. Oracle should apply the latest available patches for versions 12.2.3 through 12.2.15 as soon as they are released, ensuring that all instances of HRMS US are updated to a version where this internal operations flaw has been remediated. In the interim, organizations should enforce strict network segmentation to limit HTTP access to only necessary administrative interfaces and ensure that all web traffic is encrypted via HTTPS with strong cipher suites. Additionally, implementing robust Web Application Firewalls can help detect and block exploit attempts targeting known vulnerability patterns associated with Oracle E-Business Suite internal operations. Regular audits of user privileges are essential to ensure that low-privileged accounts do not have unnecessary access to sensitive HR modules, thereby reducing the attack surface available to potential adversaries who may compromise these lower-level credentials through phishing or other means.