Critical 9.8Known exploited (CISA KEV)Published Jan 15, 2020

CVE-2020-2551Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: WLS Core Components).

Updated under an hour ago (2026-10-19 10:00 UTC)

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It affects Oracle Corporation WebLogic Server. Add what you run to find out whether that includes you.

CISA lists it as known exploited since Nov 16, 2023; federal agencies had to remediate by Dec 7, 2023. Treat that date as your deadline.

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Every CVE for Oracle Corporation WebLogic Server

Exploited in the last 30 days

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).

CVSS: 9.8 CRITICAL (v3.0, CNA)CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Added to CISA KEV Nov 16, 2023; federal remediation due Dec 7, 2023Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
EPSS (exploitation in the next 30 days): 92.82% (percentile 100)
Assigned by: oracle
NVD analysis: Analyzed
Record last updated: Jan 12, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Oracle Corporation WebLogic Server oracle:weblogic_server (from the name)	10.3.6.0.0; 12.1.3.0.0; 12.2.1.3.0; 12.2.1.4.0	CNA record
oracle weblogic_server oracle:weblogic_server	10.3.6.0.0; 12.1.3.0.0; 12.2.1.3.0; 12.2.1.4.0	NVD

References

https://www.oracle.com/security-alerts/cpujan2020.htmlx-refsource-misc, patch, vendor-advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-2551us-government-resource

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.