CVE-2023-21841Network attack vector

Unauthenticated disclosure of server-accessible data

Published Jan 17, 2023 · Updated Sep 17, 2024

Improper authentication in Oracle WebLogic Server 12.2.1.3.0, 12.2.1.4.0, and 14.1.1.0.0 allows remote attackers to read application data. Oracle identifies the Core component but has not disclosed the authentication operation that mishandles untrusted T3 or IIOP traffic. Unauthenticated network access to either protocol is sufficient, and successful exploitation exposes critical or all server-accessible data without reported modification or service interruption.

CVSS severity7.5
High
EPSS probability0.74%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authentication in Oracle WebLogic Server 12.2.1.3.0, 12.2.1.4.0, and 14.1.1.0.0 allows remote attackers to read application data. Oracle identifies the Core component but has not disclosed the authentication operation that mishandles untrusted T3 or IIOP traffic. Unauthenticated network access to either protocol is sufficient, and successful exploitation exposes critical or all server-accessible data without reported modification or service interruption.

The record

CVE
CVE-2023-21841
Published
Jan 17, 2023
Updated
Sep 17, 2024
Vendor
Oracle Corporation
Product
Oracle WebLogic Server
Classifications
CWE-287, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 17, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 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=12.2.1.3.0
  2. Affected versionversion=12.2.1.4.0
  3. Affected versionversion=14.1.1.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

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

Published CVSS scores

7.5OracleCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-287Improper Authentication
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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