CVE-2023-22087Network attack vector

Authenticated takeover via missing critical-function authentication

Published Oct 17, 2023 · Updated Sep 13, 2024

Authentication bypass in Oracle Hospitality OPERA 5 Property Services 5.6 allows remote authenticated users to take over the service via HTTP. Oracle and CISA identify missing authentication for a critical Opera function, but Oracle has not disclosed the affected endpoint or exact validation error. Network access and low-privileged credentials are required; successful exploitation grants control of the service, including its data and availability.

CVSS severity8.8
High
EPSS probability0.56%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in Oracle Hospitality OPERA 5 Property Services 5.6 allows remote authenticated users to take over the service via HTTP. Oracle and CISA identify missing authentication for a critical Opera function, but Oracle has not disclosed the affected endpoint or exact validation error. Network access and low-privileged credentials are required; successful exploitation grants control of the service, including its data and availability.

The record

CVE
CVE-2023-22087
Published
Oct 17, 2023
Updated
Sep 13, 2024
Vendor
Oracle
Product
Oracle Hospitality OPERA 5 Property Services
Classifications
CWE-306, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 17, 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=5.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Oracle · Oracle Hospitality OPERA 5 Property Servicesversion=5.6

Published CVSS scores

8.8OracleCVSS:3.1/AV:N/AC:L/PR:L/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
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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