CVE-2020-2883: Oracle WebLogic Server Unspecified Vulnerability

Reference page built from the source records below, each shown as its source publishes it. Dataset version ref-5814c595f8cb, updated 2026-11-02T23:39:54.475Z.

CISA Known Exploited Vulnerabilities

Name: Oracle WebLogic Server Unspecified Vulnerability
Vendor: Oracle
Product: WebLogic Server
Added to the catalog: 2025-01-07
Due date for US federal agencies: 2025-01-28
Catalog version: 2026.10.30

Oracle WebLogic Server, a product within the Fusion Middleware suite, contains an unspecified vulnerability exploitable by an unauthenticated attacker with network access via IIOP or T3.

Required action (CISA)

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

Ransomware use: CISA does not mark known use of this vulnerability in ransomware campaigns.

Links in CISA's notes

Read on 2026-11-02T23:39:54.475Z under licence cisa-kev-cc0@b0067899 from https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json

NVD analysis

Status: Analyzed
Published: 2020-04-15T14:15:33.513
Last modified: 2026-06-17T03:13:10.183
Weaknesses: NVD-CWE-noinfo

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).

Metric	Score	Severity	Vector	Scored by
CVSS 3.1	9.8	CRITICAL	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	[email protected] (Primary)
CVSS 3.0	9.8	CRITICAL	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	[email protected] (Secondary)
CVSS 2.0	7.5	HIGH	AV:N/AC:L/Au:N/C:P/I:P/A:P	[email protected] (Primary)

References

http://packetstormsecurity.com/files/157950/WebLogic-Server-Deserialization-Remote-Code-Execution.html (Third Party Advisory, VDB Entry)
https://www.oracle.com/security-alerts/cpuapr2020.html (Vendor 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.html (Third Party Advisory, VDB Entry)
https://www.oracle.com/security-alerts/cpuapr2020.html (Vendor 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-2020-2883 (US Government Resource)

This product uses the NVD API but is not endorsed or certified by the NVD.

Read on 2026-11-02T23:41:43.468Z under licence nvd-api-terms-of-use@ff2a5288 from https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2020-2883

CVE record

Assigner: oracle
State: PUBLISHED
Published: 2020-04-15T13:29:50.000Z
Updated: 2026-01-12T21:02:18.109Z
Problem types: 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.

References

https://www.oracle.com/security-alerts/cpuapr2020.html
https://www.zerodayinitiative.com/advisories/ZDI-20-504/
https://www.zerodayinitiative.com/advisories/ZDI-20-570/
http://packetstormsecurity.com/files/157950/WebLogic-Server-Deserialization-Remote-Code-Execution.html

Read on 2026-11-03T01:04:17.095Z under licence cve-terms-of-use@81bfa2f3 from https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2020/2xxx/CVE-2020-2883.json

Sources and licences

CISA
Source: CISA Catalog of Known Exploited Vulnerabilities, version 2026.10.30, CC0 1.0. Use of this data does not imply endorsement by CISA or DHS.
CC0 1.0 Universal
National Vulnerability Database (NIST)
This product uses the NVD API but is not endorsed or certified by the NVD.
NVD API Terms of Use (NIST publications in the public domain, 17 U.S.C. 105)
CVE Program, The MITRE Corporation
Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation. CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy.
CVE Program Terms of Use ("CVE Usage" licence)

Cite this page

Dragons Eye Ransomware Tracker, "CVE-2020-2883: Oracle WebLogic Server Unspecified Vulnerability",
entity page, dataset version ref-5814c595f8cb, updated 2026-11-02T23:39:54.475Z,
https://ransomware-tracker.com/cve/CVE-2020-2883 (accessed 2026-11-03).
Underlying source: CISA Catalog of Known Exploited Vulnerabilities, version 2026.10.30.
Underlying source: National Vulnerability Database (NIST), CVE API 2.0, record last modified 2026-06-17T03:13:10.183.
Underlying source: CVE List (CVE Program, The MITRE Corporation), record updated 2026-01-12T21:02:18.109Z.

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