EUVD-2026-79511
GHSA-qx4v-9wjm-r797
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Remote unauthenticated low-complexity T3/IIOP request yields full server takeover, so AV:N/AC:L/PR:N/UI:N with C:H/I:H/A:H; scope unchanged as compromise stays within the WebLogic process.
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
Authentication bypass in Oracle WebLogic Server (Core component) allows unauthenticated, network-positioned attackers to gain full takeover of the server, earning the maximum CVSS 3.1 base score of 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H) with complete confidentiality, integrity, and availability impact. All four supported branches are affected: 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0, and 15.1.1.0.0. …
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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 or IIOP protocol listener (by default the same port as the admin/managed server, commonly 7001), which must be reachable by the attacker. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a genuine top-priority vulnerability, not a CVSS-inflation artifact. … 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 the Oracle Fusion Middleware Critical Security Patch Update published in the Oracle advisory at https://www.oracle.com/security-alerts/cspusep2026.html; a vendor patch is available per that advisory, but no single exact fix version string is stated in the supplied data, so verify the patched build for each branch (12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0, 15.1.1.0.0) against the advisory before deploying. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all internet-facing and internal Oracle WebLogic Server instances on versions 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0, and 15.1.1.0.0, and block external access to T3/IIOP listeners (commonly port 7001) using firewall or security group rules; if T3/IIOP is not required, disable it entirely. …
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External POC / Exploit Code
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