EUVD-2026-79512
GHSA-49v7-8ppc-2g98
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Unauthenticated network attacker over default-enabled T3/IIOP achieves full server takeover with no user interaction, yielding AV:N/AC:L/PR:N/UI:N and C:H/I:H/A:H.
Primary rating from Vendor (oracle).
CVSS VectorVendor: oracle
Lifecycle Timeline
3DescriptionCVE.org
Vulnerability in the Oracle 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 T3, IIOP to compromise Oracle WebLogic Server. Successful attacks of this vulnerability can result in takeover of Oracle 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).
AnalysisAI
Unauthenticated remote takeover of Oracle WebLogic Server is achievable through its T3 and IIOP protocol listeners in versions 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0, and 15.1.1.0.0. Classified as CWE-287 (Improper Authentication) and scored CVSS 3.1 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H), the flaw allows any network-reachable attacker - no credentials, no user interaction - to gain full confidentiality, integrity, and availability impact over the affected server, which Oracle itself rates 'easily exploitable'. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the WebLogic T3 or IIOP protocol listener to be reachable from the attacker - these run on the WebLogic administration/managed-server listen port and are enabled by default, so most standard deployments are exposed unless T3/IIOP has been explicitly filtered, disabled, or firewalled. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a genuine top-priority vulnerability, and the signals largely agree. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Apply Oracle's fix for CVE-2026-70757 for the affected branches (12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0, 15.1.1.0.0) as published in the Oracle security alert referenced by this CVE (https://www.oracle.com/security-alerts/cspusep2026.html, the cspusep2026 Critical Patch Update/Security Alert); the provided intelligence does not specify an exact patched build number, so confirm the precise patch revision against that advisory rather than assuming a version. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory every Oracle WebLogic Server instance and confirm which run 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0, or 15.1.1.0.0; identify which of those instances expose T3 and IIOP on administration and managed-server listen ports to any network beyond a strictly trusted management segment, and immediately block those ports at the perimeter and inter-segment firewalls. …
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Same weakness CWE-287 – Improper Authentication
View allSame technique Authentication Bypass
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External POC / Exploit Code
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