What is CVE-2020-2883?

CVE-2020-2883 is a critical-severity vulnerability in Oracle Weblogic Server. CVSS score: 9.8/10. Published 2020-04-15.

How severe is CVE-2020-2883?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2020-2883 known to be exploited?

Yes. CVE-2020-2883 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-01-07), indicating it is being actively exploited. 141 public proof-of-concept repositories are indexed.

Vulnerability in Oracle Weblogic Server

CVE-2020-2883

Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Core). 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, T3 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).

EPSS: 0.949 (99.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Oracle Weblogic_server — versions 10.3.6.0.0, 12.1.3.0.0, 12.2.1.3.0
Oracle Corporation Weblogic Server — versions 10.3.6.0.0, 12.1.3.0.0, 12.2.1.3.0

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2025-01-07. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2025-01-28.

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

Public proof-of-concept exploits

References

secalert_us@oracle.com (x_refsource_MISC, Vendor Advisory)
secalert_us@oracle.com (VDB Entry, Third Party Advisory, x_refsource_MISC)
secalert_us@oracle.com (VDB Entry, Third Party Advisory, x_refsource_MISC)
secalert_us@oracle.com (VDB Entry, Third Party Advisory, x_refsource_MISC)
134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)

Frequently asked questions

What is CVE-2020-2883?: CVE-2020-2883 is a critical-severity vulnerability in Oracle Weblogic Server. CVSS score: 9.8/10. Published 2020-04-15.
How severe is CVE-2020-2883?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2020-2883 known to be exploited?: Yes. CVE-2020-2883 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-01-07), indicating it is being actively exploited. 141 public proof-of-concept repositories are indexed.