CVE-2026-62638 Overview
CVE-2026-62638 is a critical vulnerability in the Oracle Reports Developer product of Oracle Fusion Middleware, affecting the Security and Authentication component. The affected version is 14.1.2.0.0. An unauthenticated attacker with network access via HTTP can exploit this flaw to compromise Oracle Reports Developer. Successful exploitation grants unauthorized creation, deletion, or modification access to critical data. Attackers can also cause a hang or frequently repeatable crash, resulting in a complete denial of service.
Critical Impact
Remote, unauthenticated attackers can modify or destroy all Oracle Reports Developer accessible data and trigger complete denial of service through simple HTTP requests.
Affected Products
- Oracle Fusion Middleware — Oracle Reports Developer
- Oracle Reports Developer version 14.1.2.0.0
- Security and Authentication component
Discovery Timeline
- 2026-08-18 - CVE-2026-62638 published to NVD
- 2026-08-20 - Last updated in NVD database
Technical Details for CVE-2026-62638
Vulnerability Analysis
The vulnerability resides in the Security and Authentication component of Oracle Reports Developer, part of Oracle Fusion Middleware. The flaw allows an unauthenticated attacker with network access via HTTP to compromise the application without any user interaction. Impact is concentrated on integrity and availability: attackers can create, delete, or modify all accessible data and force complete denial of service through hangs or repeatable crashes. Confidentiality is not affected according to the CVSS vector.
Root Cause
Oracle's advisory does not publicly disclose the specific technical root cause. The flaw is documented in the Security and Authentication component, indicating an authentication or authorization control failure that permits unauthenticated access to functionality that should require credentials. No CWE identifier has been assigned in the NVD entry.
Attack Vector
Exploitation occurs over the network via HTTP. The attacker requires no privileges, no user interaction, and low attack complexity. Any actor able to reach the Oracle Reports Developer HTTP interface can trigger the vulnerability. Refer to the Oracle Security Alert for vendor-published technical context.
Detection Methods for CVE-2026-62638
Indicators of Compromise
- Unexpected HTTP requests to Oracle Reports Developer endpoints from external or untrusted network segments.
- Unauthorized modification, creation, or deletion of report definitions, metadata, or Oracle Reports data stores.
- Repeated service crashes, hangs, or restart events in the Oracle Reports Developer process logs.
- HTTP requests targeting authentication-related endpoints without valid session context.
Detection Strategies
- Inspect Oracle Fusion Middleware and Oracle Reports Developer HTTP access logs for anomalous unauthenticated requests to administrative or authentication endpoints.
- Correlate application crash events with preceding inbound HTTP traffic to identify potential DoS exploitation attempts.
- Deploy web application firewall (WAF) signatures aligned with Oracle's published advisory to flag suspicious request patterns.
Monitoring Recommendations
- Enable verbose audit logging on the Security and Authentication component and forward logs to a centralized SIEM.
- Monitor Oracle Reports Developer process health, response latency, and unexpected restarts as availability indicators.
- Track file integrity of report definitions and configuration files to detect unauthorized modification.
How to Mitigate CVE-2026-62638
Immediate Actions Required
- Apply the fixes referenced in the Oracle Security Alert to Oracle Reports Developer 14.1.2.0.0 immediately.
- Restrict network exposure of Oracle Reports Developer HTTP interfaces to trusted internal networks and VPN users only.
- Audit recent report data, definitions, and configuration changes for unauthorized modifications.
Patch Information
Oracle has published remediation guidance in the Oracle Security Alert. Administrators should apply the vendor-supplied patch for Oracle Reports Developer 14.1.2.0.0 following Oracle's standard patch deployment procedures for Fusion Middleware.
Workarounds
- Place Oracle Reports Developer behind a reverse proxy or WAF that blocks unauthenticated access to sensitive endpoints.
- Enforce network-layer access controls to allow HTTP traffic only from authorized administrative subnets.
- If patching is not immediately possible, consider taking the Oracle Reports Developer service offline until the vendor patch can be applied.
# Example: restrict HTTP access to Oracle Reports Developer via iptables
iptables -A INPUT -p tcp --dport 7777 -s 10.0.0.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 7777 -j DROP
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
