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CVE-2026-60204 – Unauthenticated RCE via T3/IIOP – Oracle WebLogic Server 12.2.1.4.0, 14.1.1.0.0,…

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Summary

CVE-2026-60204 is a critical, unauthenticated remote code execution vulnerability affecting the Core component of Oracle WebLogic Server within Oracle Fusion Middleware. Published on 2026-07-21 as part of Oracle’s July 2026 Critical Patch Update, the flaw allows a remote, unauthenticated attacker to achieve complete takeover of an affected WebLogic Server instance with no user interaction required. With a CVSS v3.1 base score of 9.8 (Critical), this vulnerability represents one of the most severe issues addressed in the July 2026 CPU.

Technical details

  • Root cause: A vulnerability in the Core component of Oracle WebLogic Server accessible over the T3 and IIOP protocols, enabling unauthenticated remote exploitation.
  • Trigger conditions: The vulnerability is exploitable by any attacker with network access to the target on the T3 or IIOP listener port (typically TCP 7001/7002). No valid credentials and no prior access are required.
  • Attack vector: Network-reachable (AV:N), low complexity (AC:L), no privileges required (PR:N), no user interaction (UI:N).
  • Impact: Successful exploitation results in complete compromise of the Oracle WebLogic Server: full loss of confidentiality, integrity, and availability (C:H/I:H/A:H), consistent with server takeover.

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
  • Oracle WebLogic Server 15.1.1.0.0

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 patches provided in Oracle’s July 2026 Critical Patch Update (CPUJul2026) for the affected WebLogic Server versions. Oracle’s advisory is the authoritative source for the specific patch identifiers applicable to each release.
  • Network mitigation (if patching is not immediately possible): Restrict network access to the T3 and IIOP protocol ports (default TCP 7001/7002) from untrusted networks and the internet using firewall rules or WebLogic Server’s built-in connection filter. Disabling T3 and IIOP entirely on internet-facing nodes is strongly recommended where application requirements permit.

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)

IONIX uses multi-factor discovery methods, including DNS analysis, certificate mapping, metadata inspection, and more, to automatically map every internet-facing asset across your environment. This includes cloud instances, third-party platforms, shadow IT, and even forgotten infrastructure that traditional tools miss.

2

Monitor for new CVEs

Dozens of threat intel feeds using agentic technology are continuously analyzed to detect the appearance of proof-of-concept code, exploit kits, and indicators of active targeting. IONIX goes further by applying AI to proactively evaluate whether emerging vulnerabilities are likely to be exploited, even before PoCs go public.

3

Identify Potential External Exposures

Not all CVEs matter. IONIX filters vulnerabilities by asking attacker-centric questions: Can it be reached from the internet? Does it require authentication? Is it being exploited in the wild? This dramatically reduces noise and focuses teams on threats that can actually be weaponized.

4

Create Safe, Scalable Exploit Validations

IONIX transforms real-world PoCs into safe, non-intrusive test payloads that can be run in production environments without disruption. These simulations are precisely targeted to the systems that are vulnerable, ensuring rapid validation without unnecessary load.

5

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By combining context about software stack, versioning, exposure status, and reachability, IONIX ensures that only the right payloads are executed against the right assets, maximizing efficiency and minimizing risk.

6

Drive Fast and Actionable Remediation

Results are routed through integrations with ticketing, SOAR, and SIEM tools. Issues are written in plain language, bundled into remediation clusters, and prioritized based on asset criticality, exploitability, and blast radius. This shortens mean time to remediation (MTTR) and empowers teams to act with confidence.

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