EUVD-2026-79509
GHSA-cmxr-46w4-7j9h
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Oracle-described unauthenticated, low-complexity T3/IIOP network attack yielding full server takeover; default-enabled protocol supports AV:N/AC:L/PR: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 via the T3 and IIOP listeners in versions 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0, and 15.1.1.0.0, where an improper-authentication defect (CWE-287) in the Core component of Oracle Fusion Middleware lets a network attacker bypass login and obtain full confidentiality, integrity, and availability impact (CVSS 3.1 base 9.8, AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H). The only real precondition is reachability of the T3/IIOP listener, which is enabled by default and usually shares the WebLogic HTTP port (7001); no credentials and no user interaction are required, so environments that firewall, disable, or connection-filter T3/IIOP materially reduce exposure. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires network access to the WebLogic server's T3 and/or IIOP listener (by default the same port as the admin/managed server HTTP port, typically 7001), which is enabled by default in standard deployments. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a genuine high-priority vulnerability, not a CVSS-inflated one. … 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 | Patch availability is per the vendor advisory: Oracle's security alert for this issue (https://www.oracle.com/security-alerts/cspusep2026.html) is the authoritative source for the fixed release, and exact fix versions were not specified in the supplied intelligence data, so confirm the corrected build for your 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0, or 15.1.1.0.0 installation there and upgrade before exposing the server. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Oracle WebLogic Server instances and identify those running versions 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0, or 15.1.1.0.0; immediately restrict network access to T3 and IIOP listeners (typically port 7001) using firewalls, security groups, or connection filters, and disable these protocols entirely where not business-required. …
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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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