CVE-2021-2064Network attack vector

Unauthenticated remote server takeover

Published Jan 20, 2021 · Updated Sep 26, 2024

Unspecified flaw in Core Components in Oracle WebLogic Server 12.1.3.0.0 allows remote attackers to take over the server via IIOP or T3. Oracle identifies the locus only as Core Components and has not published the operation that mishandles network input. Unauthenticated network access to either affected protocol is sufficient, and successful exploitation grants control of the WebLogic Server.

CVSS severity9.8
Critical
EPSS probability3.73%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unspecified flaw in Core Components in Oracle WebLogic Server 12.1.3.0.0 allows remote attackers to take over the server via IIOP or T3. Oracle identifies the locus only as Core Components and has not published the operation that mishandles network input. Unauthenticated network access to either affected protocol is sufficient, and successful exploitation grants control of the WebLogic Server.

The record

CVE
CVE-2021-2064
Published
Jan 20, 2021
Updated
Sep 26, 2024
Vendor
Oracle Corporation
Product
Oracle WebLogic Server
Classifications
T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 20, 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=12.1.3.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Oracle Corporation · Oracle WebLogic Serverversion=12.1.3.0.0

Published CVSS scores

7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P
9.8OracleCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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

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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