CVE-2021-2023Network attack vector

Unauthenticated modification of accessible application data

Published Jan 20, 2021 · Updated Sep 26, 2024

An undisclosed flaw in Oracle Installed Base 12.1.1 through 12.1.3 and 12.2.3 through 12.2.9 allows remote attackers to modify accessible data. Oracle identifies the affected locus only as the HTTP-exposed APIs and has not published the incorrect operation performed on untrusted input. Exploitation requires no authentication but does require interaction by another person, and successful attacks can update, insert, or delete data without reading it or interrupting service.

CVSS severity4.7
Medium
EPSS probability1.07%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

An undisclosed flaw in Oracle Installed Base 12.1.1 through 12.1.3 and 12.2.3 through 12.2.9 allows remote attackers to modify accessible data. Oracle identifies the affected locus only as the HTTP-exposed APIs and has not published the incorrect operation performed on untrusted input. Exploitation requires no authentication but does require interaction by another person, and successful attacks can update, insert, or delete data without reading it or interrupting service.

The record

CVE
CVE-2021-2023
Published
Jan 20, 2021
Updated
Sep 26, 2024
Vendor
Oracle Corporation
Product
Oracle Installed Base
Classifications
T1565.001
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=12.1.1-12.1.3
  2. Affected versionversion=12.2.3-12.2.9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Oracle Corporation · Oracle Installed Baseversion=12.1.1-12.1.3; version=12.2.3-12.2.9

Published CVSS scores

4.7OracleCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N
4.3NIST NVDAV:N/AC:M/Au:N/C:N/I:P/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

T1565.001Stored Data Manipulation

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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