CVE-2026-60591Network attack vector

Data tampering and DoS via missing authentication

Published Aug 18, 2026 · Updated Aug 20, 2026

Authentication bypass in Oracle Hospitality Simphony allows remote attackers to alter data or crash the POS service via HTTP. Oracle lists affected versions as 19.8-19.8.5, 19.9-19.9.3, and 19.10-19.10.1, but it has not published the affected endpoint or code path beyond a CISA-ADP CWE-306 mapping that indicates a missing authentication check on a critical POS function. Any deployment that exposes the Simphony POS HTTP interface to untrusted networks is in scope; successful exploitation enables unauthorized create, delete, or modify operations on application data and can also trigger a hang or frequently repeatable crash.

CVSS severity9.1
Critical
EPSS probability0.42%
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 Simphony allows remote attackers to alter data or crash the POS service via HTTP. Oracle lists affected versions as 19.8-19.8.5, 19.9-19.9.3, and 19.10-19.10.1, but it has not published the affected endpoint or code path beyond a CISA-ADP CWE-306 mapping that indicates a missing authentication check on a critical POS function. Any deployment that exposes the Simphony POS HTTP interface to untrusted networks is in scope; successful exploitation enables unauthorized create, delete, or modify operations on application data and can also trigger a hang or frequently repeatable crash.

The record

CVE
CVE-2026-60591
Published
Aug 18, 2026
Updated
Aug 20, 2026
Vendor
Oracle Corporation
Product
Oracle Hospitality Simphony
Classifications
CWE-306, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 20, 2026Record 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=19.10 <=19.10.1
  2. Affected versionversion=19.8 <=19.8.5
  3. Affected versionversion=19.9 <=19.9.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Oracle Corporation · Oracle Hospitality Simphonyversion=19.10 <=19.10.1; version=19.8 <=19.8.5; version=19.9 <=19.9.3

Published CVSS scores

9.1OracleCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
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.

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Technologies

Your stack

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Your stack

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