CVE-2026-62540: Oracle E-Business Suite Privilege Escalation

CVE-2026-62540 Overview

CVE-2026-62540 is a high-severity vulnerability in the Oracle Cost Management product of Oracle E-Business Suite, specifically in the Cost Planning component. Affected versions include 12.2.3 through 12.2.15. The flaw allows a high-privileged attacker with network access via HTTP to compromise Oracle Cost Management. Successful exploitation results in full takeover of the application, impacting confidentiality, integrity, and availability. Oracle addressed this issue in its August 2026 Critical Patch Update Security Alert.

Critical Impact
Successful exploitation results in complete takeover of Oracle Cost Management, exposing sensitive financial planning data and enabling unauthorized modification of cost data.

Affected Products

Oracle E-Business Suite: Oracle Cost Management 12.2.3
Oracle E-Business Suite: Oracle Cost Management versions 12.2.4 through 12.2.14
Oracle E-Business Suite: Oracle Cost Management 12.2.15

Discovery Timeline

2026-08-18 - CVE-2026-62540 published to NVD
2026-08-20 - Last updated in NVD database

Technical Details for CVE-2026-62540

Vulnerability Analysis

The vulnerability resides in the Cost Planning component of Oracle Cost Management, a module within Oracle E-Business Suite used to manage inventory valuation, cost rollups, and financial reporting for supply chain operations. An attacker with high privileges and network access via HTTP can exploit the flaw to fully compromise the application. Oracle describes the outcome as a takeover of Oracle Cost Management, indicating full compromise of confidentiality, integrity, and availability. Attack complexity is low and no user interaction is required.

Root Cause

Oracle has not publicly disclosed the specific root cause or underlying weakness class for CVE-2026-62540. No CWE identifier is currently assigned. The Oracle Security Alert confirms the vulnerability is exploitable over HTTP against supported versions 12.2.3 through 12.2.15.

Attack Vector

Exploitation requires network access to the Oracle E-Business Suite HTTP interface and an authenticated account with high privileges. The scope is unchanged, meaning the compromise remains confined to Oracle Cost Management itself, but within that boundary the attacker gains complete control. Because no user interaction is needed, an attacker who already holds elevated E-Business Suite credentials can pivot directly to compromise the Cost Management application via crafted HTTP requests.

No public proof-of-concept or exploitation-in-the-wild has been reported. Technical exploitation details have not been published by Oracle. Refer to the Oracle Security Alert for vendor-supplied information.

Detection Methods for CVE-2026-62540

Indicators of Compromise

Unexpected HTTP requests to Oracle Cost Management endpoints originating from high-privileged accounts outside normal business workflows.
Anomalous modifications to cost planning data, item cost records, or cost rollup configurations without corresponding change tickets.
Creation or elevation of E-Business Suite user accounts followed by immediate access to Cost Management modules.

Detection Strategies

Enable and review Oracle E-Business Suite audit logs (FND_LOG_MESSAGES, sign-on audit) for privileged account activity targeting Cost Management responsibilities.
Correlate web server access logs from the Oracle HTTP Server tier with application-level authentication events to identify suspicious request patterns.
Baseline normal Cost Planning workflow behavior and alert on deviations such as off-hours activity or bulk data changes.

Monitoring Recommendations

Forward Oracle E-Business Suite application, database, and HTTP server logs to a centralized SIEM for correlation and long-term retention.
Monitor privileged user sessions with session recording or database activity monitoring on schemas backing Cost Management.
Alert on modifications to responsibility assignments granting Cost Management privileges to new or infrequently used accounts.

How to Mitigate CVE-2026-62540

Immediate Actions Required

Apply the Oracle August 2026 Critical Patch Update Security Alert patches to all affected Oracle E-Business Suite instances running Cost Management versions 12.2.3 through 12.2.15.
Inventory all E-Business Suite deployments and identify systems exposing the HTTP tier to untrusted networks.
Review and reduce the population of accounts holding high-privilege Cost Management responsibilities.

Patch Information

Oracle released fixes for CVE-2026-62540 as part of the August 2026 Critical Patch Update Security Alert. Administrators should download and apply the relevant patches for Oracle E-Business Suite 12.2 as documented in the Oracle Security Alert. Test patches in a non-production environment before deploying to production instances.

Workarounds

Restrict network access to the Oracle E-Business Suite HTTP tier using network segmentation, VPN requirements, or IP allow-listing until patches are applied.
Enforce multi-factor authentication for all privileged E-Business Suite accounts to raise the bar for credential-based compromise.
Rotate credentials for high-privilege accounts and audit recent activity if compromise is suspected.

bash

# Configuration example: verify current EBS Cost Management patch level
sqlplus apps/<password> <<EOF
SELECT bug_number, last_update_date
FROM ad_bugs
WHERE bug_number IN ('<August 2026 CPU bug numbers from Oracle Alert>')
ORDER BY last_update_date DESC;
EXIT;
EOF