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CVE-2026-60977 – Unauthenticated RCE via RMI – Oracle WebLogic Server 12.2.1.4.0, 14.1.1.0.0, 14.1.2

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Summary

CVE-2026-60977 is a critical vulnerability in Oracle WebLogic Server’s WLS Core Components that allows an unauthenticated attacker with network access via RMI to fully compromise the server. Oracle rates it CVSS 9.8 (Critical) and describes it as an easily exploitable flaw with no authentication or user interaction required. It was disclosed as part of Oracle’s August 2026 Critical Security Patch Update.

Technical details

  • Root cause: A flaw in Oracle WebLogic Server’s WLS Core Components that can be reached and abused via the Remote Method Invocation (RMI) protocol.
  • Trigger conditions: An attacker sends specially crafted RMI traffic to a network-exposed WebLogic Server instance; no valid credentials or user interaction are needed.
  • Attack vector: Network-based (AV:N), low attack complexity (AC:L), exploitable remotely over RMI.
  • Impact: Successful exploitation results in complete compromise of the WebLogic Server, with high impact to confidentiality, integrity, and availability.

Affected software

  • Oracle WebLogic Server 12.2.1.4.0
  • Oracle WebLogic Server 14.1.1.0.0
  • Oracle WebLogic Server 14.1.2.0.0

Severity

  • CVSS v3.1 Base Score: 9.8 (Critical)
  • Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Mitigation and recommended actions

  • Immediate: Apply the Oracle August 2026 Critical Security Patch Update (CSPU) fixes for Oracle WebLogic Server 12.2.1.4.0, 14.1.1.0.0, and 14.1.2.0.0, as published in Oracle’s security alert.
  • If patching cannot be applied immediately: Restrict or disable network access to WebLogic RMI interfaces from untrusted networks (e.g., via firewall rules or network segmentation) until the patch can be deployed, and monitor for anomalous RMI traffic to internet-facing WebLogic instances.

References

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