Oracle WebLogic Server Unspecified Vulnerability
Oracle Corporation — WebLogic Server
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).
9.8
94.9%
Vector breakdown
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Published
- Apr 15, 2020
- Modified
- Jun 17, 2026
- Added to KEV
- Jan 7, 2025
- Federal patch due
- Jan 28, 2025
CISA required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Affected packages
Proof-of-concept & exploitation references
8 foundWeaponization
Public repositories whose name or description references CVE-2020-2883, found via a live GitHub search at request time. These are community-sourced signals, not a verified working exploit - cross-check each one before relying on it, and treat higher star counts and recent activity as (weak) corroboration, not proof.
- zhzyker/exphub★ 4289
Exphub[漏洞利用脚本库] 包括Webloigc、Struts2、Tomcat、Nexus、Solr、Jboss、Drupal的漏洞利用脚本，最新添加CVE-2020-14882、CVE-2020-11444、CVE-2020-10204、CVE-2020-10199、CVE-2020-1938、CVE-2020-2551、CVE-2020-2555、CVE-2020-2883、CVE-2019-17558、CVE-2019-6340
updated Sep 4, 2026
- Y4er/WebLogic-Shiro-shell★ 531
WebLogic利用CVE-2020-2883打Shiro rememberMe反序列化漏洞，一键注册蚁剑filter内存shell
updated Aug 4, 2026
- Y4er/CVE-2020-2883★ 176
Weblogic coherence.jar RCE
updated Nov 4, 2025
- hktalent/CVE_2020_2546★ 133
CVE-2020-2546，CVE-2020-2915 CVE-2020-2801 CVE-2020-2798 CVE-2020-2883 CVE-2020-2884 CVE-2020-2950 WebLogic T3 payload exploit poc python3,
updated Jul 3, 2026
- zzwlpx/weblogicPoc★ 89
Weblogic Vuln POC EXP cve-2020-2551 cve-2020-2555 cve-2020-2883 ，。。。
updated May 23, 2026
- MagicZer0/Weblogic_CVE-2020-2883_POC★ 15
Proof of concept for Weblogic CVE-2020-2883
updated Feb 17, 2025
- Al1ex/CVE-2020-2883★ 5
CVE-2020-2883
updated Aug 12, 2024
- FancyDoesSecurity/CVE-2020-2883★ 2
updated Nov 3, 2020
References
Frequently asked questions
What is 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).
How severe is CVE-2020-2883?
CVE-2020-2883 has a CVSS base score of 9.8 out of 10 (CVSS 3.1).
Is CVE-2020-2883 actively exploited in the wild?
Yes. CVE-2020-2883 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added Jan 7, 2025, meaning CISA has confirmed evidence of active exploitation.
What is the EPSS score for CVE-2020-2883?
94.9% - meaning FIRST.org's EPSS model estimates a 94.9% probability this vulnerability will be exploited in the wild within 30 days (100% percentile among all scored CVEs).
Is there exploit tooling available for CVE-2020-2883?
We found 8 public GitHub repositories referencing CVE-2020-2883, though none matched a known Nuclei template or Metasploit module at last check. Review each one before relying on it - see the proof-of-concept section above.
Cross-checked against
Impactr finds and proves whether CVE-2020-2883 - or flaws like it - are actually reachable in your own web apps and APIs, with a reproducible exploit as evidence.
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