CVE-2021-2204Network attack vector

Unauthenticated read access via HTTP

Published Apr 22, 2021 · Updated Sep 26, 2024

Authentication bypass in Oracle WebLogic Server 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 allows remote attackers to read a subset of accessible data via HTTP. The Oracle advisory identifies the Core component and an easily exploitable unauthenticated network path but does not disclose the specific request handler or input-validation error. Exploitation requires network reachability to an HTTP listener and yields confidentiality impact without reported integrity or availability effects.

CVSS severity5.3
Medium
EPSS probability1.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in Oracle WebLogic Server 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 allows remote attackers to read a subset of accessible data via HTTP. The Oracle advisory identifies the Core component and an easily exploitable unauthenticated network path but does not disclose the specific request handler or input-validation error. Exploitation requires network reachability to an HTTP listener and yields confidentiality impact without reported integrity or availability effects.

The record

CVE
CVE-2021-2204
Published
Apr 22, 2021
Updated
Sep 26, 2024
Vendor
Oracle Corporation
Product
Oracle WebLogic Server
Classifications
T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 22, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 26, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=10.3.6.0.0
  2. Affected versionversion=12.1.3.0.0
  3. Affected versionversion=12.2.1.3.0
  4. Affected versionversion=12.2.1.4.0
  5. Affected versionversion=14.1.1.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Oracle Corporation · Oracle WebLogic Serverversion=10.3.6.0.0; version=12.1.3.0.0; version=12.2.1.3.0; version=12.2.1.4.0; version=14.1.1.0.0

Published CVSS scores

5.3Oracle CorporationCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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