CVE-2026-62635 Overview
CVE-2026-62635 is a critical vulnerability in the Oracle Reports Developer product of Oracle Fusion Middleware. The flaw resides in the Security and Authentication component of version 14.1.2.0.0. An unauthenticated attacker with network access over HTTP can compromise the affected system without user interaction. Successful exploitation results in complete takeover of Oracle Reports Developer, impacting confidentiality, integrity, and availability. Oracle addressed the issue in a security alert published in August 2026.
Critical Impact
Remote, unauthenticated attackers can fully take over Oracle Reports Developer instances reachable over HTTP.
Affected Products
- Oracle Fusion Middleware — Oracle Reports Developer
- Component: Security and Authentication
- Affected version: 14.1.2.0.0
Discovery Timeline
- 2026-08-18 - CVE-2026-62635 published to the National Vulnerability Database (NVD)
- 2026-08-20 - Last updated in NVD database
Technical Details for CVE-2026-62635
Vulnerability Analysis
CVE-2026-62635 affects the Security and Authentication component of Oracle Reports Developer. The vulnerability is remotely exploitable over HTTP without credentials or user interaction. According to the Oracle Security Alert, successful attacks lead to takeover of the Oracle Reports Developer service, granting attackers control over the reporting environment and any data it processes.
Oracle Reports Developer is used to design and deploy enterprise reporting applications, and it often integrates with backend databases holding sensitive business data. A takeover therefore extends the blast radius beyond the middleware tier into connected data sources and downstream systems.
Oracle classifies the issue as easily exploitable, which indicates the attack path does not depend on non-default configurations or complex preconditions.
Root Cause
Oracle has not publicly disclosed the underlying defect. The advisory attributes the flaw to the Security and Authentication component, which suggests a weakness in how the product validates or enforces authentication over its HTTP interface. Refer to the Oracle Security Alert for vendor-provided details.
Attack Vector
The attack vector is network-based over HTTP. An attacker sends crafted requests to an exposed Oracle Reports Developer endpoint. No prior authentication is required, and no victim interaction is needed. Because Oracle Reports Developer instances are often reachable from internal networks or, when misconfigured, from the internet, exposed deployments present an immediate target.
No verified proof-of-concept code is currently available. Public exploit indicators are limited to Oracle's advisory. Organizations should treat any unauthenticated HTTP request patterns targeting reports endpoints as suspicious until patched.
Detection Methods for CVE-2026-62635
Indicators of Compromise
- Unexpected unauthenticated HTTP requests to Oracle Reports Developer servlets or report execution endpoints.
- New or unknown report definitions, jobs, or output files created outside of change-control windows.
- Outbound network connections from the Reports Developer host to unfamiliar external addresses.
- Creation of new operating system processes or shells spawned by the Reports Developer service account.
Detection Strategies
- Inspect web server and reverse-proxy logs for anomalous URI patterns, high request rates, or malformed parameters directed at Reports Developer.
- Correlate authentication logs with HTTP access logs to identify successful actions that lack a preceding authenticated session.
- Baseline normal report execution behavior and alert on deviations in report frequency, source IPs, or execution accounts.
Monitoring Recommendations
- Forward Oracle Fusion Middleware logs, HTTP server logs, and host telemetry to a central analytics platform for continuous review.
- Monitor the Reports Developer service account for file writes, script execution, and privilege changes on the host.
- Alert on any external exposure of Reports Developer ports discovered by attack surface scans.
How to Mitigate CVE-2026-62635
Immediate Actions Required
- Apply the fixes referenced in the Oracle Security Alert for the August 2026 update cycle.
- Inventory all Oracle Fusion Middleware deployments and identify instances running Oracle Reports Developer 14.1.2.0.0.
- Restrict network access to Reports Developer endpoints to trusted management networks until patching completes.
- Review recent HTTP logs for suspicious unauthenticated activity that predates patch installation.
Patch Information
Oracle published remediation guidance in the August 2026 Critical Patch Update / Security Alert. Administrators should download and apply the vendor-supplied patch for Oracle Reports Developer version 14.1.2.0.0 as outlined in the Oracle Security Alert. Validate patch application by confirming the updated build identifier reported by the product after restart.
Workarounds
- Block external HTTP access to Reports Developer using perimeter firewalls, WAF rules, or reverse-proxy allowlists.
- Disable or shut down non-essential Reports Developer instances until the patch is deployed.
- Enforce network segmentation so that only application servers requiring the Reports service can reach it.
- Rotate credentials and secrets stored by Reports Developer after patching if exposure is suspected.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
