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CVE Record

CVE-2020-2884: Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Core).

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).

CriticalCVSS 9.8Not KEV-listedUpdated
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Glexia's TakeAutomated analysiscritical

Security readout for executives and security teams

Plain-English summary

CVE-2020-2884 is a critical Oracle WebLogic Server flaw that can let an unauthenticated network attacker take over an affected server. The business risk is severe because compromise of WebLogic can expose applications, data, and service availability.

Executive priority

Treat this as urgent for any exposed WebLogic estate. A successful attack can result in full server takeover, so remediation should be tracked as a critical infrastructure risk until patched or isolated.

Technical view

The Oracle advisory describes a Core component vulnerability in WebLogic Server 10.3.6.0.0, 12.1.3.0.0, 12.2.1.3.0, and 12.2.1.4.0. It is network exploitable over IIOP and T3, needs no credentials or user interaction, and has CVSS 9.8.

Likely exposure

Exposure is most likely where affected WebLogic versions are still running and IIOP or T3 is reachable from untrusted networks. Internet-facing or broadly accessible middleware tiers should be treated as highest risk.

Exploitation context

The provided sources support easy unauthenticated network exploitation and possible server takeover. The bundle marks KEV as false and provides no cited evidence of active exploitation, so active exploitation should not be asserted from this evidence alone.

Researcher notes

The sources do not provide CWE, root-cause detail, proof-of-concept status, or product-specific fixed version mapping beyond Oracle CPU reference. Validation should focus on affected version confirmation, patch status, and protocol reachability.

Mitigation direction

  • Apply Oracle's April 2020 Critical Patch Update or a superseding vendor-supported update.
  • Prioritize WebLogic systems exposing IIOP or T3 to untrusted networks.
  • Restrict IIOP and T3 access to trusted administrative and application paths.
  • Remove or isolate unsupported affected WebLogic versions where patching is not feasible.
  • Check Oracle guidance before relying on compensating controls.

Validation and detection

  • Inventory WebLogic Server versions across production, staging, and disaster recovery environments.
  • Confirm affected versions have the April 2020 CPU or superseding patches installed.
  • Verify IIOP and T3 are not reachable from the internet or broad internal networks.
  • Review WebLogic configuration and firewall rules for unnecessary protocol exposure.
  • Check relevant server logs for suspicious unauthenticated activity around exposed services.
Prepared
Confidence
high
Sources
3

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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CVE-2020-2884 mapping review

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Vulnerability profileCVE Program record
Severity
Critical
CVSS
9.8 (3.0)
Known Exploited
No
Published

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
9.8CVSS 3.0CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9Primary CVE score

Vulnerability scoring details

Base CVSS 3.0 score

9.8Critical
CVSS 3.0 vector shape for CVE-2020-2884Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
Oracle CorporationWebLogic Server10.3.6.0.0, 12.1.3.0.0, 12.2.1.3.0, 12.2.1.4.0Listed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.