Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Network HTTP reachable with low complexity and no user interaction, but a low-privilege authenticated foothold is required (PR:L), and full takeover yields C:H/I:H/A:H.
Primary rating from Vendor (oracle).
CVSS VectorVendor: oracle
Lifecycle Timeline
2DescriptionCVE.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 and 14.1.2.0.0. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle WebLogic Server. Successful attacks of this vulnerability can result in takeover of Oracle WebLogic Server. CVSS 3.1 Base Score 8.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).
AnalysisAI
Full server takeover in Oracle WebLogic Server (Fusion Middleware Core component) versions 12.2.1.4.0 and 14.1.2.0.0 allows a low-privileged attacker with network HTTP access to fully compromise confidentiality, integrity, and availability of the server. Rated CVSS 3.1 8.8 (High) and disclosed in Oracle's July 2026 Critical Patch Update, the flaw requires only low-level authenticated access and no user interaction, making it attractive for post-authentication lateral movement. No public exploit identified at time of analysis, and it is not currently listed in CISA KEV.
Technical ContextAI
Oracle WebLogic Server is a Java EE application server at the heart of many Oracle Fusion Middleware deployments, exposing HTTP(S), T3, and IIOP listeners. The vulnerability resides in the WebLogic 'Core' subsystem, which handles request processing and management functions shared across deployed applications. Oracle did not assign a CWE (CWE: N/A) and provides no technical root-cause detail in its advisory; the 'Information Disclosure' tag combined with the C:H/I:H/A:H impact and 'takeover' language suggests an authenticated flaw that escalates from limited access to complete server control, a pattern historically associated with insecure deserialization or authorization bypass in WebLogic. The affected CPE is cpe:2.3:a:oracle_corporation:oracle_weblogic_server, covering the 12.2.1.4.0 and 14.1.2.0.0 release lines.
RemediationAI
Apply the patches from Oracle's July 2026 Critical Patch Update (https://www.oracle.com/security-alerts/cpujul2026.html), which is the authoritative source for the exact patch/bundle numbers for the 12.2.1.4.0 and 14.1.2.0.0 lines - Patch available per vendor advisory; a specific fixed build string was not included in the provided data and should be taken directly from the CPU matrix. Because exploitation requires low-privileged authenticated HTTP access, meaningful compensating controls until patching include restricting network reachability of the WebLogic admin and managed-server HTTP ports to trusted management networks only (trade-off: may disrupt legitimate remote administration and app traffic), enforcing strong authentication and pruning unnecessary low-privilege accounts to shrink the pool of usable footholds, and placing a WAF or reverse proxy in front of the HTTP listeners to filter anomalous requests (trade-off: signature coverage is uncertain without exploit details). Do not rely on workarounds as a substitute for the Oracle CPU patch.
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Same technique Authentication Bypass
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External POC / Exploit Code
Leaving vuln.today
EUVD-2026-46613
GHSA-92v6-hg99-rrh7