Is CVE-2021-2109 actively exploited?

Yes. KEV Intelligence tracks CVE-2021-2109 as a known exploited vulnerability. Confidence is high.

What exploitation activity has KEV Intelligence observed?

KEV Intelligence has not yet recorded sensor-observed exploitation attempts for CVE-2021-2109. Our sensors continue to monitor for activity targeting this CVE.

Which versions are affected?

CVE-2021-2109 affects Oracle Corporation WebLogic Server. KEV Intelligence lists 5 version rows; examples include 10.3.6.0.0, 12.1.3.0.0, and 12.2.1.3.0.

No. CVE-2021-2109 is not currently listed in CISA KEV.

Vulnerability report

Exploited in the wild High confidence Not in CISA KEV

CVE-2021-2109

WebLogic Server

Oracle Corporation / WebLogic Server · 10.3.6.0.0

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Severity: CVSS 7.2 · High
Confidence: High
Exploit status: Exploited in the wild
EPSS: 70.4%
First observed: —
Last observed: —

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2021-2109 is a vulnerability affecting Oracle Corporation WebLogic Server. Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Console). Supported versions that are affected...

Is it exploited?

Yes. KEV Intelligence tracks this CVE as a known exploited vulnerability. Confidence is high.

Who is affected?

Oracle Corporation / WebLogic Server 10.3.6.0.0.

What should we do?

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

Overview

Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Console)

Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Console). Supported versions that are affected are 10.3.6.0.0, 12.1.3.0.0, 12.2.1.3.0, 12.2.1.4.0 and 14.1.1.0.0. Easily exploitable vulnerability allows high privileged attacker with network access via HTTP to compromise Oracle WebLogic Server.

Successful attacks of this vulnerability can result in takeover of Oracle WebLogic Server. CVSS 3.1 Base Score 7.2 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H).

Vendor Product Affected Status

Oracle Corporation WebLogic Server 10.3.6.0.0 Affected

Oracle Corporation WebLogic Server 12.1.3.0.0 Affected

Oracle Corporation WebLogic Server 12.2.1.3.0 Affected

Oracle Corporation WebLogic Server 12.2.1.4.0 Affected

Oracle Corporation WebLogic Server 14.1.1.0.0 Affected

Published: 20 Jan 2021
Exploitation Reported: 15 Aug 2026
Attack vector: Remote
Complexity: Low
Privileges: High
User interaction: None

CVE References

oracle.com/security-alerts/cpujan2021.html oracle.com · CVE Record https://www.oracle.com/security-alerts/cpujan2021.html
packetstormsecurity.com/files/161053/Oracle-WebLogic-Server-14.1.1.0... packetstormsecurity.com · CVE Record http://packetstormsecurity.com/files/161053/Oracle-WebLogic-Server-14...

Exploitation evidence

Why KEV Intelligence marks this CVE as exploited

Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.

Exploited in the wild

The Shadowserver

Recorded 15 Aug 2026

Independent exploitation attestation added to the KEV Intelligence record.

Proof of concept available

GitHub

Recorded 22 Jan 2021

Public scanner or PoC coverage increases practical exploitability.

Known exploited vulnerability sources

Per-source evidence links for KEV attestations are available through the KEV Intelligence Pro API.

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Source	Added
The Shadowserver First	2026-08-15 00:00 UTC

Detection

Operational artifacts and observed signals

Make the evidence actionable in scanner, SOC, and edge-control workflows.

Observed signals

Request targets: 0
User-Agents: 0

Raw values available in Pro and Enterprise.

Scanner coverage

No scanner integrations recorded yet.

Virtual patch status

No KEV Intelligence virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.

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No detection artifacts or sensor request patterns are available for this CVE yet.

Check back as sensor telemetry and scanner integrations are updated.

Risk and context

Severity, weaknesses, and research context

CVSS v3.1

7.2 High

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

EPSS

70.4%

All CVSS Scores

CVSS v3.1 7.2 High

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0 6.5 Medium

AV:N/AC:L/Au:S/C:P/I:P/A:P

Potential Proof of Concepts

These PoCs are unverified and could contain malware. Use at your own risk.

Al1ex/CVE-2021-2109

github · Created 2021-01-22 05:37:11 UTC · 30 stars · AI assessment 85%

CVE-2021-2109 && Weblogic Server RCE via JNDI

Timeline

From disclosure to observed exploitation

15 Aug 2026
Added to KEV Intelligence KEV Feed

High-confidence, third-party attested exploitation
22 Jan 2021
Public PoC available

Public proof-of-concept code published
20 Jan 2021
CVE published

Vulnerability disclosed publicly
09 Dec 2020
CVE ID reserved

Identifier reserved by the CNA

Pro API

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Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.

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Evidence confidence and provenance
First-party sensor telemetry
PoC and scanner references
Affected versions and enrichment
Automation-ready JSON delivery

GET /api/v2/pro/kevs/CVE-2021-2109

Free JSON includes basic KEV fields

{
  "cve_id": "CVE-2021-2109",
  "confidence": "High",
  "cvss_score": 7.2,
  "epss_score": 0.70447,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "attempts": 0, "sensors": 0 }
}

Early warning alerts

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