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CVE-2020-2551 (GCVE-0-2020-2551)

Vulnerability from cvelistv5 – Published: 2020-01-15 16:34 – Updated: 2026-01-12 21:12
VLAI CISA Previdian
Summary
Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: WLS Core Components). 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 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).
Severity
9.8 (Critical)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: active Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-30 17:03 UTC
CWE
  • Easily exploitable vulnerability allows unauthenticated attacker with network access via IIOP to compromise Oracle WebLogic Server. Successful attacks of this vulnerability can result in takeover of Oracle WebLogic Server.
  • CWE-noinfo Not enough information
Assigner
References
Impacted products
Vendor Product Version CPE status
Oracle Corporation WebLogic Server Affected: 10.3.6.0.0
Affected: 12.1.3.0.0
Affected: 12.2.1.3.0
Affected: 12.2.1.4.0
guessed Create a notification for this product.
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: b5dbf782-f223-4538-8588-dee1258fbcad

Vulnerability ID: CVE-2020-2551

Status: Confirmed

Status Updated: 2023-11-16 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2023-11-16
Asserted: 2023-11-16
Scope
Notes: KEV entry: Oracle Fusion Middleware Unspecified Vulnerability | Affected: Oracle / Fusion Middleware | Description: Oracle Fusion Middleware contains an unspecified vulnerability in the WLS Core Components that allows an unauthenticated attacker with network access via IIOP to compromise the WebLogic Server. | Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. | Due date: 2023-12-07 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://www.oracle.com/security-alerts/cpujan2020.html; https://nvd.nist.gov/vuln/detail/CVE-2020-2551
Evidence

Type: Vendor Report

Signal: Successful Exploitation

Confidence: 80%

Source: cisa-kev

Details
Cwes
Feed CISA Known Exploited Vulnerabilities Catalog
Product Fusion Middleware
Due Date 2023-12-07
Date Added 2023-11-16
Vendorproject Oracle
Vulnerabilityname Oracle Fusion Middleware Unspecified Vulnerability
Knownransomwarecampaignuse Unknown
References
Created: 2026-02-02 12:26 UTC | Updated: 2026-02-06 07:17 UTC
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 48e5ad78-e1f8-419f-8410-db8a72dc5e91

Vulnerability ID: CVE-2020-2551

Status: Confirmed

Status Updated: 2023-11-16 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2023-11-16
Asserted: 2023-11-16
Scope
Notes: KEVIntel entry: Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: WLS Core Components). Supported versions that are... | Affected: Oracle Corporation / WebLogic Server | CVSS: 9.8 (CRITICAL) | Used in malware: unknown | Not yet in CISA KEV: False
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: kevintel

Details
Feed KEVIntel (kevintel.com)
Title Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: WLS Core Components). Supported versions that are...
Vendor Oracle Corporation
Product WebLogic Server
Added Date 2023-11-16T00:00:00.000Z
Cvss Score 9.8
Epss Score None
Cvss Severity CRITICAL
Epss Percentile None
Used In Malware unknown
Ahead Of Cisa Kev None
Not Yet In Cisa Kev False
References
Created: 2026-06-23 14:05 UTC | Updated: 2026-07-10 06:14 UTC
Show details on NVD website
To clipboard 

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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.