CVE-2023-21857Network attack vector

Unauthenticated modification of critical HCM data

Published Jan 17, 2023 · Updated Sep 17, 2024

Improper access control in Oracle HCM Common Architecture 12.2.3 through 12.2.12 allows remote attackers to alter critical data via HTTP. Oracle identifies the Automated Test Suite component but has not disclosed the flawed request handler or the operation it performs without authorization. No authentication or user interaction is required, and successful exploitation can create, delete, or modify all application-accessible data.

CVSS severity7.5
High
EPSS probability0.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Oracle HCM Common Architecture 12.2.3 through 12.2.12 allows remote attackers to alter critical data via HTTP. Oracle identifies the Automated Test Suite component but has not disclosed the flawed request handler or the operation it performs without authorization. No authentication or user interaction is required, and successful exploitation can create, delete, or modify all application-accessible data.

The record

CVE
CVE-2023-21857
Published
Jan 17, 2023
Updated
Sep 17, 2024
Vendor
Oracle
Product
Oracle HCM Common Architecture
Classifications
CWE-284, 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?

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  1. Affected versionversion=12.2.3-12.2.12

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Oracle · Oracle HCM Common Architectureversion=12.2.3-12.2.12

Published CVSS scores

7.5OracleCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/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.

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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-284Improper Access Control
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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