CVE-2026-60947 Overview
CVE-2026-60947 is a critical vulnerability in Oracle WebCenter Enterprise Capture, a component of Oracle Fusion Middleware. The flaw resides in the Client Bundle component and affects supported versions 12.2.1.4.0 and 14.1.2.0.0. An unauthenticated attacker with network access via Java Remote Method Invocation (RMI) can compromise the application without user interaction. Successful exploitation results in full takeover of the affected WebCenter Enterprise Capture instance, impacting confidentiality, integrity, and availability. The weakness maps to [CWE-284: Improper Access Control].
Critical Impact
Unauthenticated remote attackers can achieve complete takeover of Oracle WebCenter Enterprise Capture over RMI, exposing captured documents and business workflows.
Affected Products
- Oracle WebCenter Enterprise Capture 12.2.1.4.0
- Oracle WebCenter Enterprise Capture 14.1.2.0.0
- Oracle Fusion Middleware (Client Bundle component)
Discovery Timeline
- 2026-08-18 - CVE-2026-60947 published to NVD
- 2026-08-20 - Last updated in NVD database
- 2026-08 - Oracle publishes Oracle Security Alert with patch guidance
Technical Details for CVE-2026-60947
Vulnerability Analysis
The vulnerability affects the Client Bundle component of Oracle WebCenter Enterprise Capture. The service accepts inbound RMI connections without enforcing sufficient access controls. An attacker only needs network reachability to the RMI listener to invoke privileged operations against the application server.
The issue is classified under [CWE-284: Improper Access Control]. Because RMI transports serialized Java objects, a successful compromise typically yields code execution in the context of the WebCenter Capture process. From there, an attacker can pivot to captured content, database credentials, and other Fusion Middleware components sharing the domain.
EPSS currently rates the exploitation probability at 0.486% (39.99 percentile), though this figure can change quickly once weaponized proof-of-concept code emerges for Oracle Fusion Middleware components.
Root Cause
The root cause is improper enforcement of authentication and authorization on the RMI interface exposed by the Client Bundle. Remote method calls do not require valid credentials, allowing anonymous invocation of sensitive operations. Oracle has not published low-level technical details, and no independent code analysis is publicly available.
Attack Vector
Exploitation is network-based and requires no privileges or user interaction. An attacker sends crafted RMI requests to the WebCenter Enterprise Capture RMI port, invokes exposed methods, and leverages Java deserialization or method logic to seize control of the server process. The attack succeeds against default configurations where the RMI endpoint is reachable from an untrusted network segment.
No verified public proof-of-concept is available at this time. Refer to the Oracle Security Alert for vendor-supplied technical context.
Detection Methods for CVE-2026-60947
Indicators of Compromise
- Unexpected inbound TCP connections to the WebCenter Capture RMI registry port from external or non-administrative source addresses.
- New or modified Java classes, JSP files, or scheduled tasks under the WebCenter Capture domain directory.
- Anomalous child processes spawned by the WebLogic managed server hosting WebCenter Capture, such as shells or scripting interpreters.
- Outbound connections from the Fusion Middleware host to attacker-controlled infrastructure following RMI traffic.
Detection Strategies
- Inspect WebLogic and WebCenter Capture access logs for RMI method invocations originating from unexpected clients.
- Enable Java deserialization monitoring where available, and alert on classes commonly abused in RMI exploitation chains.
- Correlate network flow data with process telemetry on the host to identify RMI traffic followed by process spawns.
Monitoring Recommendations
- Baseline legitimate RMI clients and alert on deviations at the network firewall or IDS.
- Forward Fusion Middleware, operating system, and EDR logs to a centralized SIEM for cross-source correlation.
- Monitor file integrity on the WebCenter Capture domain and deployment directories to detect unauthorized artifacts.
How to Mitigate CVE-2026-60947
Immediate Actions Required
- Apply the Oracle Critical Patch Update referenced in the Oracle Security Alert to all affected 12.2.1.4.0 and 14.1.2.0.0 installations.
- Restrict network access to the WebCenter Capture RMI listener using host firewalls and network ACLs, permitting only known administrative hosts.
- Audit recent RMI traffic and WebLogic logs for signs of exploitation before and after patching.
Patch Information
Oracle has published fixes as part of its Critical Patch Update cycle. Administrators should download and apply the patches listed in the Oracle Security Alert for Oracle WebCenter Enterprise Capture. Validate patch application by confirming the updated component version in the domain configuration.
Workarounds
- Place the RMI port behind a segmented management network accessible only through VPN or bastion hosts.
- Disable or restrict the Client Bundle RMI interface if it is not required for the deployment.
- Deploy Java deserialization filters (jdk.serialFilter) to block classes commonly abused in RMI exploitation.
# Example: restrict RMI port with iptables (adjust port to your deployment)
RMI_PORT=1099
iptables -A INPUT -p tcp --dport ${RMI_PORT} -s 10.0.0.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport ${RMI_PORT} -j DROP
# Example: enable a global JVM deserialization filter for WebLogic
export JAVA_OPTIONS="${JAVA_OPTIONS} -Djdk.serialFilter='!org.apache.commons.collections.**;!org.codehaus.groovy.runtime.**;java.**;javax.**'"
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
