CVE-2020-2883

Name: CVE-2020-2883
Creator: NVD / NIST
Published: 2020-04-15T14:15:33.513+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10Actively ExploitedEPSS 94.93%

Last modified Jun 17, 2026

CVE-2020-2883 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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. CISA has confirmed active exploitation in the wild. EPSS estimates a 94.93% chance of exploitation in the next 30 days.

Description

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).

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

94.93%

99.9th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by Jan 28, 2025.

Affected Software

Vendor	Product	Versions
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

References

http://packetstormsecurity.com/files/157950/WebLogic-Server-Deserialization-Remote-Code-Execution.htmlThird Party Advisory, VDB Entry
https://www.oracle.com/security-alerts/cpuapr2020.htmlVendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-20-504/Third Party Advisory, VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-20-570/Third Party Advisory, VDB Entry
http://packetstormsecurity.com/files/157950/WebLogic-Server-Deserialization-Remote-Code-Execution.htmlThird Party Advisory, VDB Entry
https://www.oracle.com/security-alerts/cpuapr2020.htmlVendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-20-504/Third Party Advisory, VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-20-570/Third Party Advisory, VDB Entry
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-2883US Government Resource

Timeline

Published: Apr 15, 2020
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2020-2883?

How severe is CVE-2020-2883?

CVE-2020-2883 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 94.93% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2020-2883?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-2883?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST