CVE-2026-35300
Analyzed Analyzed - Analysis Complete

Authentication Bypass in Oracle WebLogic Server

Publication date: 2026-06-17

Last updated on: 2026-06-18

Assigner: Oracle

Description
Vulnerability in the WebLogic Server product of Oracle Fusion Middleware (component: Core). Supported versions that are affected are 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0 and 15.1.1.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via TCP to compromise WebLogic Server. Successful attacks of this vulnerability can result in takeover of WebLogic Server. CVSS 3.1 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

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Meta Information

Published
2026-06-17
Last Modified
2026-06-18
Generated
2026-07-08
AI Q&A
2026-06-18
EPSS Evaluated
2026-07-06
NVD
CVE-2026-35300
EUVD
EUVD-2026-37426

Affected Vendors & Products

Showing 4 associated CPEs
Vendor Product Version / Range
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

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-502 The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

Attack-Flow Graph

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Compliance Impact

This vulnerability allows an unauthenticated attacker with network access to fully compromise the WebLogic Server, resulting in complete takeover. Such a compromise can lead to unauthorized access, modification, or destruction of sensitive data.

Given the high impact on confidentiality, integrity, and availability (CVSS score 9.8), exploitation of this vulnerability could result in violations of data protection regulations such as GDPR and HIPAA, which require safeguarding sensitive personal and health information against unauthorized access and breaches.

Therefore, organizations using affected versions of WebLogic Server may face compliance risks if this vulnerability is not promptly addressed.

Executive Summary

This vulnerability exists in the WebLogic Server product of Oracle Fusion Middleware, specifically in its core component. It affects several supported versions including 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0, and 15.1.1.0.0.

The vulnerability is easily exploitable by an unauthenticated attacker who has network access via TCP. Such an attacker can compromise the WebLogic Server without needing any prior privileges or user interaction.

Successful exploitation can lead to a complete takeover of the WebLogic Server, impacting confidentiality, integrity, and availability of the system.

Impact Analysis

This vulnerability can have severe impacts as it allows an unauthenticated attacker to fully compromise the WebLogic Server.

  • Confidentiality impact: Sensitive data on the server could be exposed.
  • Integrity impact: Data and system configurations could be altered or corrupted.
  • Availability impact: The server could be disrupted or taken offline, affecting service availability.

Overall, this could lead to loss of control over the server and potentially compromise the entire environment relying on it.

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