Oracle · Fusion Middleware
CVE-2020-2551
Oracle Fusion Middleware Unspecified Vulnerability
What it is
Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: WLS Core Components). Supported versions that are affected are 10.3.6.0.0, 12.1.3.0.0, 12.2.1.3.0 and 12.2.1.4.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via IIOP to compromise Oracle WebLogic Server. Successful attacks of this vulnerability can result in takeover of Oracle WebLogic Server. CVSS 3.0 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
CISA: Oracle Fusion Middleware contains an unspecified vulnerability in the WLS Core Components that allows an unauthenticated attacker with network access via IIOP to compromise the WebLogic Server.
What to do
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Deadline for US federal agencies: December 7, 2023
- Added to the CISA list
- November 16, 2023
- Published
- January 15, 2020
- Severity
- Critical 9.8 CVSS 3.0
- Chance of attacks in the next 30 days (EPSS)
- 93% in the top 0.2% of all known vulnerabilities
- More details
- NVD · CVE.org · CISA
All references (1)
More exploited flaws from Oracle
| Added | Vulnerability | Product | Severity | Attack chance |
|---|---|---|---|---|
| Nov 21, 2025 | Missing Authentication for Critical Function | Fusion Middleware | Critical 9.8 | 89% |
| Nov 28, 2022 | Unspecified | Fusion Middleware | Critical 9.8 | 96% |
| May 25, 2022 | Unspecified | Fusion Middleware | Critical 9.8 | 7.8% |
| Mar 28, 2022 | Unspecified | Fusion Middleware | Medium 4.7 | 4.7% |
| Nov 3, 2021 | Unspecified | Fusion Middleware | Critical 9.1 | 99% |
| Aug 24, 2026 | Improper Access Control | HTTP Server and Oracle Weblogic Server Proxy Plug-in | Critical 10.0 | 73% |
| Jul 15, 2026 | Improper Privilege Management | E-Business Suite | Critical 9.8 | 12% |
| Jun 12, 2026 | PeopleSoft Enterprise PeopleTools Missing Authentication for Critical Function | PeopleSoft Enterprise PeopleTools | Critical 9.8 | 97% |
Sources: Known Exploited Vulnerabilities (CISA, public domain), CVE records (cve.org) and EPSS (FIRST). The chance of attacks is the EPSS estimate that someone will try to exploit the flaw in the next 30 days.