CVE-2026-61120: Oracle HRMS Privilege Escalation Flaw

CVE-2026-61120 Overview

CVE-2026-61120 is a high-severity vulnerability in the Oracle Human Resources Management System (HRMS) (US) product of Oracle E-Business Suite. The flaw resides in the Internal Operations component and affects supported versions 12.2.3 through 12.2.15. A low-privileged attacker with logon access to the infrastructure where Oracle HRMS (US) executes can exploit this vulnerability, though exploitation is difficult and requires local access. Successful exploitation results in complete takeover of Oracle HRMS (US), impacting confidentiality, integrity, and availability. Oracle addressed this issue in the July 2026 Critical Patch Update.

Critical Impact
Successful exploitation allows a low-privileged local attacker to fully compromise Oracle HRMS (US), leading to unauthorized access, modification, and disruption of sensitive human resources data.

Affected Products

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

Discovery Timeline

2026-07-21 - CVE-2026-61120 published to NVD
2026-07-21 - Last updated in NVD database
July 2026 - Oracle addresses the vulnerability in the Oracle Critical Patch Update

Technical Details for CVE-2026-61120

Vulnerability Analysis

CVE-2026-61120 affects the Internal Operations component of Oracle HRMS (US), a module within the Oracle E-Business Suite responsible for managing internal HR workflows and administrative operations. The vulnerability allows an authenticated attacker with low privileges and logon access to the underlying infrastructure to escalate control over the HRMS (US) product. According to Oracle's advisory, exploitation is difficult and requires specific conditions to be met, reflected in the high attack complexity rating.

The scope remains unchanged, meaning the compromise is contained to the vulnerable component. However, all three security properties (confidentiality, integrity, availability) suffer high impact. The EPSS score of 0.122% indicates a low predicted likelihood of near-term exploitation.

Root Cause

Oracle has not disclosed the specific technical root cause of the vulnerability in public documentation. Oracle Critical Patch Update advisories typically withhold detailed technical information until customers have had sufficient time to apply patches. The advisory categorizes the flaw within the Internal Operations component, suggesting the weakness resides in code paths that handle privileged internal HRMS operations accessible to authenticated users on the host infrastructure.

Attack Vector

The attack vector is local, meaning the attacker must already have logon access to the infrastructure hosting Oracle HRMS (US). The attacker must hold at least low-level privileges. No user interaction is required to complete the attack. The high attack complexity indicates the attacker must overcome additional conditions such as timing, configuration, or environmental factors to successfully exploit the flaw.

Specific exploitation details and proof-of-concept code are not publicly available. Refer to the Oracle Critical Patch Update for authoritative technical guidance.

Detection Methods for CVE-2026-61120

Indicators of Compromise

Unexpected privilege escalation events on hosts running Oracle HRMS (US) versions 12.2.3 through 12.2.15.
Unauthorized modifications to HRMS Internal Operations configuration files or database records.
Anomalous logon sessions from low-privileged accounts followed by administrative actions in HRMS.
New or altered scheduled jobs, concurrent programs, or PL/SQL procedures within the HRMS schema.

Detection Strategies

Audit Oracle E-Business Suite versions across the environment and flag any host running affected HRMS (US) versions.
Monitor Oracle database audit logs for privilege changes and access to HRMS Internal Operations objects.
Correlate local logon events on HRMS hosts with subsequent process execution and database activity.
Track file integrity on Oracle E-Business Suite application tier binaries and configuration files.

Monitoring Recommendations

Enable Oracle Fine-Grained Auditing (FGA) on sensitive HRMS tables and procedures.
Forward operating system authentication logs and Oracle audit trails to a centralized SIEM for correlation.
Alert on unexpected local logons to production HRMS hosts, particularly outside of change windows.
Review privileged account usage on Oracle E-Business Suite infrastructure at least weekly.

How to Mitigate CVE-2026-61120

Immediate Actions Required

Apply the July 2026 Oracle Critical Patch Update to all instances of Oracle HRMS (US) running affected versions.
Inventory all Oracle E-Business Suite deployments and identify versions between 12.2.3 and 12.2.15.
Restrict local logon access on Oracle HRMS (US) infrastructure to a minimal set of administrative accounts.
Review and rotate credentials for any low-privileged accounts with access to HRMS hosts.

Patch Information

Oracle released the fix as part of the July 2026 Critical Patch Update. Customers must download and apply the relevant patch bundle documented in the Oracle Critical Patch Update advisory. Oracle recommends applying Critical Patch Updates without delay and notes that unsupported product versions may remain vulnerable.

Workarounds

Limit interactive and remote logon capabilities to the Oracle HRMS (US) application and database tiers using host-based access controls.
Enforce least privilege for all operating system accounts on Oracle E-Business Suite servers.
Segment Oracle E-Business Suite infrastructure from general corporate networks to reduce lateral movement risk.
Increase audit logging verbosity on HRMS Internal Operations components until patches are deployed.

bash

# Example: restrict interactive logon on Linux hosts running Oracle HRMS (US)
# Limit SSH access to the oracle admin group only
echo 'AllowGroups oracle_admins' | sudo tee -a /etc/ssh/sshd_config
sudo systemctl restart sshd

# Enable Oracle database auditing for HRMS schema access
sqlplus / as sysdba <<EOF
AUDIT SELECT, INSERT, UPDATE, DELETE ON HR.INTERNAL_OPERATIONS BY ACCESS;
EOF