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CVE-2026-35301 – Unauthenticated RCE – Oracle WebLogic Server 12.2.1.4.0 and 14.1.1.0.0

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Summary

CVE-2026-35301 is a critical unauthenticated remote code execution vulnerability in Oracle WebLogic Server, published on June 16, 2026 as part of Oracle’s June 2026 Critical Security Patch Update. The flaw resides in the WebLogic Server Console component and allows a network-based attacker with no credentials to fully compromise the affected server. With a maximum CVSS 3.1 base score of 10.0, this vulnerability represents the highest possible severity rating.

Technical details

  • Root cause: An exploitable flaw in the Oracle WebLogic Server Console component that is reachable over HTTP without prior authentication.
  • Trigger conditions: An unauthenticated attacker with network access to the WebLogic Server Console via HTTP can send crafted requests to trigger the vulnerability — no user interaction or elevated privileges are required.
  • Attack vector: Network-reachable (AV:N), low attack complexity (AC:L), no privileges required (PR:N), no user interaction (UI:N).
  • Impact: Successful exploitation results in complete compromise of the target WebLogic Server instance, with high impact on confidentiality, integrity, and availability. The Changed Scope (S:C) metric indicates the attack can affect resources beyond the vulnerable component itself, consistent with full server takeover and potential lateral movement within the hosting environment.

Affected software

  • Oracle WebLogic Server 12.2.1.4.0
  • Oracle WebLogic Server 14.1.1.0.0

Severity

| Metric | Value |
|—|—|
| CVSS v3.1 Base Score | 10.0 (Critical) |
| Vector String | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |

Mitigation and recommended actions

  • Immediate action: Apply the patches provided by Oracle in the June 2026 Critical Security Patch Update. Patch availability details and installation instructions are published in Oracle’s Patch Availability Document for Oracle Products (My Oracle Support Note CPU195). Organizations should access My Oracle Support to obtain and apply the relevant patches for WebLogic Server 12.2.1.4.0 and 14.1.1.0.0 without delay.
  • Network mitigation (if patching is not immediately feasible): Restrict network access to the WebLogic Server Console port (typically TCP 7001/7002) at the perimeter firewall or via host-based access controls. Prevent direct internet exposure of the Console component and limit access to trusted administrative IP ranges only.

IONIX Status

The IONIX research team is tracking ongoing exploitation attempts and recommends immediate patching. Potentially affected assets are outlined in this post.

References

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How IONIX’s External Exposure Management Platform Detects and Validates
Zero-Days to Shrink MTTR

1

Map your entire attack surface (continously)

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2

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