CVE-2020-2883: Oracle WebLogic Server Unspecified Vulnerability
- Is it exploited?
Yes. CISA added it to the Known Exploited Vulnerabilities catalog on 7 Jan 2025, 1,728 days after the CVE record was published.
- How likely is exploitation in the next 30 days?
- 94.6%
EPSS score, percentile 99.9 of all scored records
- How severe?
- 9.8 Critical
CVSS v3.0 base score, given by the CNA
- What should I do?
Required action (CISA), due 28 Jan 2025: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
The CVE record links no vendor advisory, patch or mitigation.
- Which versions are affected?
Affected: 10.3.6.0.0; 12.1.3.0.0; 12.2.1.3.0; 12.2.1.4.0
Source: CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.28, as of 28 Oct 2026; FIRST Exploit Prediction Scoring System (EPSS), v2026.06.15, as of 28 Oct 2026; CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.
What to do
Required action, set by CISA
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
CISA due date for this action: 28 January 2025.
Advisories and patches
The CVE record links no vendor advisory, patch or mitigation.
Linked from CISA's catalog entry
- https://www.oracle.com/security-alerts/cpuapr2020.html
- https://nvd.nist.gov/vuln/detail/CVE-2020-2883
Affected products and versions
As listed in the CVE record.
| Status | Versions |
|---|---|
| Affected | 10.3.6.0.0 |
| Affected | 12.1.3.0.0 |
| Affected | 12.2.1.3.0 |
| Affected | 12.2.1.4.0 |
Source: CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.
About this vulnerability
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.
Summary: CISA's KEV catalog, as of 28 Oct 2026.
- CISA added CVE-2020-2883 to its Known Exploited Vulnerabilities (KEV) catalog on 7 Jan 2025.
- CISA's ransomware flag for this entry is "Unknown": no evidence of ransomware use in the catalog, which is not proof of none.
- The due date CISA sets for the required action is 28 Jan 2025.
- The CVE record was published on 15 Apr 2020, 1,728 days before it was added to KEV.
- The CVE record carries a CVSS v3.0 base score of 9.8 (Critical), given by its CNA.
- FIRST's EPSS model puts the probability of exploitation in the next 30 days at 94.6% (percentile 99.9), as of 28 Oct 2026.
- CISA's SSVC assessment in the CVE record: exploitation active, automatable yes, technical impact total.
Source: CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.28, as of 28 Oct 2026; CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026; FIRST Exploit Prediction Scoring System (EPSS), v2026.06.15, as of 28 Oct 2026. About the data.
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).
Source: CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.
Timeline
| Date | Event |
|---|---|
| 15 Apr 2020 | CVE record published |
| 7 Jan 2025 | Added to CISA KEV |
| 28 Jan 2025 | CISA due date for the required action |
| 12 Jan 2026 | CVE record last updated |
References
More exploited Oracle vulnerabilities
- CVE-2026-21962: Oracle HTTP Server and Oracle Weblogic Server Proxy Plug-in Improper Access Control Vulnerability
- CVE-2026-46817: Oracle E-Business Suite Improper Privilege Management Vulnerability
- CVE-2026-35273: Oracle PeopleSoft Enterprise PeopleTools Missing Authentication for Critical Function Vulnerability
- CVE-2024-21182: Oracle WebLogic Server Unspecified Vulnerability
- CVE-2025-61757: Oracle Fusion Middleware Missing Authentication for Critical Function Vulnerability
- CVE-2025-61884: Oracle E-Business Suite Server-Side Request Forgery (SSRF) Vulnerability