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CVE Vulnerability Database
Vulnerability Database/CVE-2026-62456

CVE-2026-62456: Oracle HRMS Privilege Escalation Flaw

CVE-2026-62456 is a privilege escalation vulnerability in Oracle HRMS (UK) that enables low-privileged attackers to gain unauthorized access to critical data. This article covers technical details, affected versions, and mitigation.

Updated:

CVE-2026-62456 Overview

CVE-2026-62456 affects the Oracle HRMS (UK) product within Oracle E-Business Suite, specifically the Internal Operations component. Supported versions 12.2.3 through 12.2.15 are vulnerable. A low-privileged attacker with network access via HTTPS can compromise Oracle HRMS (UK). The vulnerability is difficult to exploit but carries a scope change, meaning successful attacks may significantly impact additional products beyond Oracle HRMS (UK). The weakness is classified under [CWE-269] Improper Privilege Management. Successful exploitation can lead to unauthorized creation, deletion, or modification of critical data, as well as unauthorized read access to all Oracle HRMS (UK) accessible data.

Critical Impact

Authenticated attackers can achieve unauthorized access, modification, or deletion of critical HR data with scope change affecting adjacent Oracle E-Business Suite products.

Affected Products

  • Oracle E-Business Suite - Oracle HRMS (UK) version 12.2.3
  • Oracle E-Business Suite - Oracle HRMS (UK) versions 12.2.4 through 12.2.14
  • Oracle E-Business Suite - Oracle HRMS (UK) version 12.2.15

Discovery Timeline

Technical Details for CVE-2026-62456

Vulnerability Analysis

The vulnerability resides in the Internal Operations component of Oracle HRMS (UK), a module of Oracle E-Business Suite that manages UK-specific human resources workflows. An authenticated attacker with low privileges can leverage the flaw over HTTPS to bypass intended privilege boundaries. The scope change indicated in the CVSS vector means the attack impacts resources beyond the vulnerable component's own security authority. This includes both confidentiality and integrity impacts on data accessible through Oracle HRMS (UK) as well as potentially adjacent Oracle E-Business Suite products. Availability is not affected.

Root Cause

The vulnerability is categorized as [CWE-269] Improper Privilege Management. The Internal Operations component fails to properly enforce privilege boundaries for authenticated users. A low-privileged account can perform actions or access data reserved for higher-privileged users, resulting in unauthorized data disclosure and unauthorized modification.

Attack Vector

Exploitation requires network access to the Oracle E-Business Suite HTTPS endpoint and a valid low-privileged user account. The attacker sends specially crafted requests to the Internal Operations component to escalate access or perform privileged actions against HRMS data. Oracle rates the attack complexity as high, indicating that specific preconditions or timing requirements must be met for successful exploitation. No user interaction is required.

No public proof-of-concept code is available. See the Oracle Security Alert July 2026 for vendor technical details.

Detection Methods for CVE-2026-62456

Indicators of Compromise

  • Unexpected HTTPS requests to Oracle HRMS (UK) Internal Operations endpoints from low-privileged accounts
  • Anomalous read or write operations against HRMS tables performed by non-HR service accounts
  • Audit log entries showing data access or modification outside a user's normal role scope
  • Session activity from HRMS accounts touching adjacent Oracle E-Business Suite modules

Detection Strategies

  • Enable Oracle E-Business Suite auditing for the Internal Operations component and forward logs to a centralized SIEM
  • Baseline normal request patterns per role and alert on privilege-boundary violations
  • Correlate authentication events with subsequent privileged data access to identify abuse of low-privileged accounts

Monitoring Recommendations

  • Monitor Oracle database audit trails for INSERT, UPDATE, and DELETE operations against HRMS schemas by unexpected principals
  • Track HTTPS request volumes and URI patterns targeting Internal Operations endpoints for spikes or reconnaissance behavior
  • Review Oracle Workflow and FND user activity for cross-module access following HRMS logins

How to Mitigate CVE-2026-62456

Immediate Actions Required

  • Apply the July 2026 Critical Patch Update from Oracle to all Oracle E-Business Suite instances running versions 12.2.3 through 12.2.15
  • Inventory all Oracle HRMS (UK) deployments and confirm patch status against the vendor advisory
  • Review and reduce the number of accounts with access to the Internal Operations component
  • Rotate credentials for any account that may have been used to test the affected endpoints

Patch Information

Oracle addressed CVE-2026-62456 in the July 2026 Critical Patch Update. Administrators should reference the Oracle Security Alert July 2026 advisory and apply the corresponding patch for Oracle E-Business Suite 12.2.3 through 12.2.15. No official workaround replaces patching.

Workarounds

  • Restrict network access to Oracle E-Business Suite HTTPS endpoints using firewall rules or reverse proxy allowlists until the patch is applied
  • Enforce least privilege by removing unnecessary responsibilities and roles from HRMS user accounts
  • Enable enhanced auditing on the Internal Operations component to detect exploitation attempts pending patch deployment

See the Oracle Security Alert July 2026 for authoritative remediation guidance.

Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.

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