CVE-2023-21983Network attack vector

Unauthenticated data access, modification, and service interruption

Published Jul 18, 2023 · Updated Sep 13, 2024

Unspecified flaw in Oracle Application Express Administration 18.2 through 22.2 allows remote attackers to read or alter data via HTTP. Oracle has not disclosed the affected component or the incorrect operation performed on untrusted input. Exploitation requires no credentials or user interaction but has high complexity; successful attacks affect only some accessible data and can partially interrupt the service.

CVSS severity5.6
Medium
EPSS probability0.38%
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 Oracle Application Express Administration 18.2 through 22.2 allows remote attackers to read or alter data via HTTP. Oracle has not disclosed the affected component or the incorrect operation performed on untrusted input. Exploitation requires no credentials or user interaction but has high complexity; successful attacks affect only some accessible data and can partially interrupt the service.

The record

CVE
CVE-2023-21983
Published
Jul 18, 2023
Updated
Sep 13, 2024
Vendor
Oracle Corporation
Product
Oracle Application Express
Classifications
T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 18, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 13, 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=Application Express Administration: 18.2 <=22.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Oracle Corporation · Oracle Application Expressversion=Application Express Administration: 18.2 <=22.2

Published CVSS scores

5.6Oracle CorporationCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

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.

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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