CVE-2026-62518: Oracle Production Scheduling Auth Bypass

CVE-2026-62518 Overview

CVE-2026-62518 is a high-severity vulnerability in the Oracle Production Scheduling product of Oracle E-Business Suite, within the Internal Operations component. The flaw affects supported versions 12.2.3 through 12.2.15. A low-privileged attacker with network access via HTTP can exploit this vulnerability without user interaction. Successful exploitation allows unauthorized creation, deletion, or modification of critical data, unauthorized read access to a subset of accessible data, and a partial denial of service against Oracle Production Scheduling. The weakness is categorized under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor.

Critical Impact
An authenticated attacker with low privileges can compromise data integrity, read sensitive scheduling data, and cause partial service disruption over the network with low attack complexity.

Affected Products

Oracle E-Business Suite - Oracle Production Scheduling 12.2.3
Oracle E-Business Suite - Oracle Production Scheduling 12.2.4 through 12.2.14
Oracle E-Business Suite - Oracle Production Scheduling 12.2.15

Discovery Timeline

2026-07-21 - CVE CVE-2026-62518 published to NVD
2026-07-22 - Last updated in NVD database

Technical Details for CVE-2026-62518

Vulnerability Analysis

The vulnerability resides in the Internal Operations component of Oracle Production Scheduling, a module of Oracle E-Business Suite. Oracle categorizes the flaw as easily exploitable across HTTP, requiring only network reachability and a low-privileged account. Attackers do not need to trick a user into any action to trigger the condition.

Exploitation produces high impact on integrity, allowing unauthorized creation, deletion, or modification of all Oracle Production Scheduling accessible data. Confidentiality impact is limited to a subset of accessible data, while availability impact is partial. Oracle attributes the weakness class to CWE-200, which indicates sensitive information exposure combined with insufficient authorization enforcement on operations exposed by the component.

The EPSS model currently estimates a low probability of near-term exploitation, though enterprise exposure of Oracle E-Business Suite systems raises the practical risk profile for organizations running affected releases.

Root Cause

Oracle has not published implementation-level details. Based on the CWE-200 mapping and impact profile, the root cause centers on insufficient access control and data exposure within the Internal Operations component. Server-side endpoints appear to permit low-privileged authenticated users to reach operations that should be restricted to higher-privileged roles.

Attack Vector

The attack originates from the network over HTTP. An attacker authenticates to Oracle E-Business Suite with any low-privileged account and issues crafted requests to the Internal Operations component of Oracle Production Scheduling. Because the attack complexity is low and no user interaction is required, exploitation can be automated against internet-exposed or intranet-accessible Oracle E-Business Suite deployments.

No public proof-of-concept code is available. Refer to the Oracle Critical Patch Update Advisory - July 2026 for vendor guidance.

Detection Methods for CVE-2026-62518

Indicators of Compromise

Unexpected create, update, or delete operations on Oracle Production Scheduling records performed by low-privileged accounts.
HTTP requests from unusual source addresses targeting Internal Operations endpoints in Oracle E-Business Suite.
Anomalous read access patterns against Production Scheduling data outside a user's assigned scope.
Partial service degradation or intermittent errors in Oracle Production Scheduling logs coinciding with authenticated HTTP traffic bursts.

Detection Strategies

Audit Oracle E-Business Suite application logs for actions taken by accounts whose roles do not normally include Production Scheduling data modification.
Correlate HTTP access logs on the Oracle HTTP Server tier with backend Production Scheduling changes to identify privilege mismatches.
Baseline normal API usage for the Internal Operations component and alert on deviations in request rate, source, or operation type.

Monitoring Recommendations

Enable and forward Oracle E-Business Suite audit trails and Fusion Middleware logs to a centralized analytics platform for retention and correlation.
Monitor authentication events for concurrent low-privileged sessions performing sensitive scheduling actions.
Track patch levels of Oracle Production Scheduling across all environments and alert on hosts running versions 12.2.3 through 12.2.15 without the July 2026 CPU applied.

How to Mitigate CVE-2026-62518

Immediate Actions Required

Apply the fixes published in the Oracle Critical Patch Update - July 2026 to all affected Oracle E-Business Suite instances.
Inventory all Oracle Production Scheduling deployments and identify systems running versions 12.2.3 through 12.2.15.
Restrict network access to Oracle E-Business Suite HTTP endpoints so that only authorized internal networks or VPN clients can reach them.
Review and tighten role assignments so low-privileged accounts do not retain unnecessary access to Internal Operations functionality.

Patch Information

Oracle addressed CVE-2026-62518 in the July 2026 Critical Patch Update. Administrators should download and apply the relevant patch for Oracle E-Business Suite 12.2.x following the guidance in the Oracle Security Alert July 2026. Oracle recommends applying Critical Patch Updates without delay because unfixed vulnerabilities have historically been targeted by attackers.

Workarounds

Place Oracle E-Business Suite behind a reverse proxy or web application firewall that enforces authenticated access and rate limiting for Production Scheduling paths.
Temporarily disable or restrict access to the Oracle Production Scheduling module for users who do not require it until the patch is deployed.
Enforce strong authentication and periodic credential rotation for all Oracle E-Business Suite accounts to reduce the pool of usable low-privileged credentials.