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Vulnerabilities

Vulnerability · CVE-2020-2551

Oracle Fusion Middleware Unspecified Vulnerability

Published Jan 15, 2020 · catalog updated Jun 16, 2026 · Oracle Fusion Middleware

Patch now

CVE-2020-2551 is in the CISA known-exploited catalog, due Dec 7, 2023. Confirm Oracle Fusion Middleware against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Severity
Critical9.8
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
92.82%
Remediation
Remediation guidance
Affected products
cpe oracle/weblogic server · vendor Oracle Fusion Middleware

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).

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe oracle/weblogic server10.3.6.0.0
  • cpe oracle/weblogic server12.1.3.0.0
  • cpe oracle/weblogic server12.2.1.3.0
  • cpe oracle/weblogic server12.2.1.4.0
  • vendor Oracle Fusion Middlewareversion unspecified

How to fix CVE-2020-2551

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2020-2551 is in the CISA known-exploited catalog, due Dec 7, 2023. Confirm Oracle Fusion Middleware against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Compare what you have installed with oracle/weblogic server 10.3.6.0.0; oracle/weblogic server 12.1.3.0.0; oracle/weblogic server 12.2.1.3.0; oracle/weblogic server 12.2.1.4.0. Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

What should an analyst verify?

No weakness class is stored. EPSS 92.82%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jan 15, 2020 · Catalog

    Detected

    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 takeove

  2. Nov 16, 2023 · CISA KEV

    Known exploited

    Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

  3. Dec 7, 2023 · CISA KEV

    Remediation due

    Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

  4. Jun 16, 2026 · Catalog

    Updated

    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 takeove

Sources

  • CISA KEVConfirmed exploitationCVE-2020-2551

    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.

    cisa.gov
  • CVE.orgVulnerability recordCVE-2020-2551

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2020-2551

    30-day exploitation probability 92.8%

    first.org
  • NIST NVDVulnerability recordCVE-2020-2551

    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 netw

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2020-2551

    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.

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.