CVE-2026-61027: Oracle Cost Management Privilege Escalation

CVE-2026-61027 Overview

CVE-2026-61027 affects the Oracle Cost Management product within Oracle E-Business Suite, specifically the Inventory Costing component. Supported versions 12.2.3 through 12.2.15 are affected. The vulnerability allows a high-privileged attacker with network access via HTTP to compromise Oracle Cost Management. Successful exploitation results in complete takeover of the affected product, impacting confidentiality, integrity, and availability.

Oracle disclosed this issue in the July 2026 Critical Patch Update. The flaw requires authenticated access but has low attack complexity, making post-authentication exploitation straightforward for adversaries with valid high-privilege credentials.

Critical Impact
Authenticated attackers can achieve full takeover of Oracle Cost Management, gaining control over inventory costing data and processes across all supported 12.2.x deployments.

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

2026-07-21 - CVE CVE-2026-61027 published to NVD
2026-07-21 - Last updated in NVD database

Technical Details for CVE-2026-61027

Vulnerability Analysis

The vulnerability resides in the Inventory Costing component of Oracle Cost Management. An attacker with network reachability to the E-Business Suite HTTP interface and existing high-privilege credentials can send crafted requests that lead to full takeover of the Cost Management product. Oracle characterizes exploitation as easy, meaning no specialized conditions or race windows are required.

Because the scope remains unchanged and impacts extend to confidentiality, integrity, and availability, an attacker can read, modify, and disrupt costing data. Inventory Costing is a financially sensitive module, so compromise can propagate into general ledger postings, cost of goods sold calculations, and downstream financial reporting.

Root Cause

Oracle has not published root-cause technical details. The advisory identifies the affected component as Inventory Costing and indicates that a high-privileged authenticated actor over HTTP is sufficient to trigger the flaw. See the Oracle Security Advisory July 2026 for vendor-supplied information.

Attack Vector

The attack vector is network-based over HTTP against the Oracle E-Business Suite application tier. The attacker must hold high-level application privileges before exploitation. User interaction is not required, and the attack complexity is low. Once conditions are met, the attacker executes requests against the Cost Management interface to gain control of the product.

No public proof-of-concept exploit is available at the time of publication, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog. The EPSS probability is approximately 0.34% at the 26.6th percentile.

Detection Methods for CVE-2026-61027

Indicators of Compromise

Unexpected HTTP requests targeting Oracle Cost Management or Inventory Costing endpoints from privileged user sessions outside normal business hours.
Anomalous changes to inventory cost records, costing methods, or cost update transactions that lack an approved change ticket.
New or modified privileged E-Business Suite user accounts with access to the Cost Management responsibility.

Detection Strategies

Enable and forward Oracle E-Business Suite application logs, HTTP server (Oracle HTTP Server) access logs, and database audit logs to a centralized analytics platform.
Baseline normal usage of the Cost Management module and alert on deviations in request volume, endpoint paths, or session duration for high-privileged accounts.
Correlate authentication events for administrative EBS accounts with subsequent Cost Management activity to identify credential misuse.

Monitoring Recommendations

Monitor privileged EBS account logins from unusual IP ranges or geographies.
Track database-level modifications to costing tables (CST_*, MTL_*) that occur outside standard batch windows.
Alert on configuration or profile option changes affecting Cost Management responsibilities and menus.

How to Mitigate CVE-2026-61027

Immediate Actions Required

Apply the July 2026 Oracle Critical Patch Update to all Oracle E-Business Suite 12.2.x environments as soon as change control permits.
Inventory all EBS deployments running Oracle Cost Management versions 12.2.3 through 12.2.15 and prioritize internet-facing or partner-accessible instances.
Rotate credentials for high-privileged EBS accounts and review recent privileged activity in the Cost Management module.

Patch Information

Oracle addressed CVE-2026-61027 in the July 2026 Critical Patch Update. Refer to the Oracle Security Advisory July 2026 for patch identifiers and installation instructions specific to each supported 12.2 release level.

Workarounds

Restrict network access to the E-Business Suite application tier using firewall rules, VPN gateways, or reverse proxies until patches are applied.
Reduce the number of accounts assigned high-privilege Cost Management responsibilities and enforce multi-factor authentication for those accounts.
Increase audit logging on Cost Management and related database schemas to shorten detection time if exploitation is attempted.

bash

# Configuration example: restrict access to EBS Cost Management URLs at the reverse proxy
# Only permit internal management network to reach Cost Management endpoints
location ~* /OA_HTML/.*Cost.* {
    allow 10.10.0.0/16;
    deny  all;
    proxy_pass http://ebs-app-tier;
}