Oracle WebLogic Server RMI Unauthenticated Remote Code Execution
First seen Aug 21, 2026 · Updated Aug 21, 2026 · CVSS 9.8
CVE-2026-60977 is a critical, easily exploitable vulnerability in Oracle WebLogic Server that allows an unauthenticated attacker with network access via RMI to fully compromise the server. With a CVSS score of 9.8, successful exploitation can lead to complete takeover of confidentiality, integrity, and availability. Organizations running affected WebLogic versions should prioritize immediate patching due to the low attack complexity and lack of authentication requirements.
Technical Analysis
CVE-2026-60977 affects Oracle WebLogic Server's WLS Core Components, impacting versions 12.2.1.4.0, 14.1.1.0.0, and 14.1.2.0.0. The vulnerability is exploitable over the network via the Java RMI protocol without authentication or user interaction, consistent with historical WebLogic RMI/T3 deserialization flaws that enable remote code execution. Given the CVSS vector (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H), attackers can achieve full server compromise with minimal effort, likely leading to arbitrary code execution, data exfiltration, or deployment of secondary payloads such as web shells or ransomware. Enterprises frequently deploy WebLogic as a backend application server for middleware integrations, including those that host or orchestrate AI agent frameworks, RAG pipelines, and LLM tool-calling services; a successful compromise could expose API keys, model credentials, and agent orchestration logic running on or communicating through the affected server.
Affected Systems
Oracle WebLogic Server versions 12.2.1.4.0, 14.1.1.0.0, and 14.1.2.0.0 (Oracle Fusion Middleware, WLS Core Components) exposed via RMI/T3 network interfaces
Indicators of Compromise
- No specific IOCs published at this time (indicators pending public exploitation reports)
Remediation Steps
- 1
Apply Oracle Critical Patch Update
Immediately apply the relevant Oracle Critical Patch Update (CPU) addressing CVE-2026-60977 for all affected WebLogic Server versions.
- 2
Restrict RMI/T3 Network Access
Block or restrict inbound access to RMI and T3/T3S protocols at the network perimeter and internal firewalls to only trusted administrative hosts.
- 3
Monitor for Exploitation Indicators
Deploy IDS/IPS signatures and monitor WebLogic server logs for anomalous RMI traffic, unexpected process spawning, or unauthorized file writes.
- 4
Isolate and Segment Middleware Hosts
Segment WebLogic servers, especially those integrated with AI agent or automation pipelines, from sensitive credential stores and API key vaults to limit lateral movement.
- 5
Rotate Exposed Credentials
If compromise is suspected, rotate all API keys, service account credentials, and secrets accessible from or stored on the affected WebLogic instances.
CVE / Advisory IDs
Industries Most Exposed
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