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Oracle Simphony CVE-2026-60590

| EUVDEUVD-2026-61390 HIGH
Improper Access Control (CWE-284)
2026-08-18 secalert_us@oracle.com GHSA-vhrf-w2g7-c2rq
7.5
CVSS 3.1 · Vendor: oracle
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Identify network-reachable Simphony POS HTTP endpoint
  2. Delivery
    Send unauthenticated crafted HTTP request
  3. Exploit
    Authentication bypass triggered in POS component
  4. Execution
    Gain unauthorized read access to Simphony data tier
  5. Impact
    Exfiltrate transaction records or customer data

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Access control enforcement
MITRE ATT&CK

1 technique across 1 tactic: Defense Evasion

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Exploitation requires only network access to the Oracle Hospitality Simphony POS component over HTTP on an affected release (19.8-19.8.5, 19.9-19.9.3, or 19.10-19.10.1). The CVSS vector AV:N/AC:L/PR:N/UI:N confirms unauthenticated remote exploitation against default configurations of Oracle Simphony - no special setup, feature flag, or operator action is needed to be vulnerable. Limiting factors include: network segmentation or firewall rules isolating POS systems from untrusted networks would block external exploitation; the scored impact is confidentiality-only, meaning the attacker cannot write data or disrupt POS availability through this vector alone; and only the three listed release lines are confirmed affected - operators on fully patched or out-of-scope versions are not exposed.

Impact

The CVSS 3.1 base score of 7.5 (High) with vector AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N represents a clear, high-confidence threat profile: no prerequisites, low attack complexity, no privileges, and no user interaction are required. Oracle's own advisory language - 'easily exploitable' - further signals that exploitation automation is plausible and that the barrier to entry is exceptionally low. No EPSS data was included in the available intelligence feed, but the combination of network attack vector, low complexity, and no authentication historically correlates with elevated EPSS percentiles for similar Oracle advisories. The absence from CISA KEV and the lack of reported public exploit code moderately temper immediate exploitation probability, though this gap may close rapidly given the simplicity of the attack surface. Impact is scoped strictly to confidentiality - no integrity or availability dimension is scored - limiting consequences to data exfiltration rather than POS service disruption. Nonetheless, Simphony environments routinely store transaction histories, loyalty data, and potentially payment-adjacent records, making unauthorized read access operationally and regulatorily significant; even a mid-sized hospitality operator in sanok should treat this as a priority remediation item rather than deferring to a routine maintenance cycle. No conflicting signals between the available intelligence sources were identified.

Exploit ScenarioDerived

An unauthenticated attacker with HTTP network access to a Simphony POS endpoint sends a crafted request that bypasses the missing or improperly enforced authentication check, gaining direct read access to all data accessible within the Simphony application - including transaction records, customer information, and system configuration. No public exploit code exists at time of analysis, but the low attack complexity and absence of any privilege requirement mean the attack is likely straightforward to reproduce once the vulnerable endpoint path is identified through enumeration or analysis of the advisory.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.4% exploitation probability (EPSS)

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AnalysisAIv1 – Aug 18, 2026

Unauthenticated remote access to Oracle Hospitality Simphony's POS component enables complete unauthorized read access to all application data via an HTTP-based authentication bypass across three actively supported release lines. The CVSS 3.1 vector AV:N/AC:L/PR:N/UI:N confirms that no credentials, interaction, or special configuration are required - any network-reachable attacker can exploit the flaw. No public exploit code has been identified at time of analysis, and the vulnerability has not been added to the CISA Known Exploited Vulnerabilities catalog.

RemediationAI

Apply the patches distributed as part of Oracle's Critical Security Patch Update for August 2026, available at https://www.oracle.com/security-alerts/cspuaug2026.html. The advisory is the authoritative source for exact patched build identifiers, as no specific fixed version number was included in the available intelligence data - consult it directly before deploying updates. As an interim compensating control, implement firewall or network segmentation rules to restrict HTTP access to Simphony POS endpoints to only authorized POS terminal IP ranges and designated management hosts; this meaningfully reduces the exposed attack surface but does not eliminate the vulnerability if the internal network is itself compromised. Blocking or disabling internet-facing exposure of the POS component is strongly advisable until patching is complete, noting that this may impact remote management or cloud-sync workflows that depend on external HTTP connectivity. Enabling enhanced HTTP access logging on the POS component and monitoring for anomalous unauthenticated request patterns can support detection of exploitation attempts in the interim period.

Affected VersionsENISA

Oracle Hospitality Simphony 19.10 ≤19.10.1
Oracle Hospitality Simphony 19.9 ≤19.9.3
Oracle Hospitality Simphony 19.8 ≤19.8.5

Affected Packages

euvd oracle_hospitality_simphony no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

Oracle Hospitality Simphony is an enterprise cloud-based point-of-sale platform used across large-scale restaurant and hotel operations, communicating primarily over HTTP. The vulnerable component is the POS subsystem, which handles transaction processing, menu and inventory management, and customer-facing data flows. The 'Authentication Bypass' tag indicates that one or more HTTP endpoints within the POS component fail to enforce authentication controls, allowing direct access to protected data without valid credentials. No CWE is assigned by NVD, preventing precise root-cause classification, but the behavior is consistent with either missing authentication for a critical function (CWE-306) or improper access control (CWE-284). Affected release ranges - 19.8 through 19.8.5, 19.9 through 19.9.3, and 19.10 through 19.10.1 - are confirmed by Oracle's August 2026 Critical Security Patch Update advisory. No CPE strings were included in the available intelligence data.

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Severity by source

Vendor (oracle) PRIMARY 7.5 HIGH
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
vuln.today AI 7.5 HIGH

HTTP-exposed POS endpoint with no authentication requirement supports AV:N/PR:N/AC:L; data-read-only impact with no write or service disruption capability justifies C:H/I:N/A:N and unchanged scope.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (oracle).

CVSS VectorVendor: oracle

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

DescriptionCVE.org

Vulnerability in the Oracle Hospitality Simphony product of Oracle Food and Beverage Applications (component: POS). Supported versions that are affected are 19.8-19.8.5, 19.9-19.9.3 and 19.10-19.10.1. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Hospitality Simphony. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle Hospitality Simphony accessible data. CVSS 3.1 Base Score 7.5 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).

Executive ViewAI

Why It Matters

An unauthenticated vulnerability in Oracle Hospitality Simphony's point-of-sale system enables attackers to remotely access all customer payment data, transaction records, and operational information across three actively supported versions. Organizations using affected Simphony releases face immediate exposure of sensitive payment and customer data without requiring any valid credentials, creating compliance and operational risk.

Business Impact: High
Compensating Controls

No vendor-released patch identified at time of analysis. Interim mitigations include: restrict network access to Simphony POS components via firewall rules limiting HTTP/HTTPS connections to authenticated administrative networks only; deploy a WAF to block unauthenticated requests to sensitive endpoints; implement IP-based access controls; enable comprehensive audit logging and monitoring for unusual data access patterns; isolate POS systems on a segmented network with restricted egress; and maintain close monitoring of Oracle Hospitality security advisories for patch availability.

Threat Intelligence Overview

EPSS Score
0.4%
Top 67% exploitable
Prevalence
Medium
widely deployed enterprise POS platform across hospitality and food service
Data Quality
4 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC No
EPSS 0.4%
Patch available No
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
Yes
Human Impact
High

Priority Score

38
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +38
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

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