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Oracle Hyperion CVE-2026-62545

| EUVDEUVD-2026-61542 HIGH
Improper Access Control (CWE-284)
2026-08-18 secalert_us@oracle.com GHSA-6788-qh53-hhpr
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
    Gain adjacent network access
  2. Delivery
    Target Installation and Configuration service
  3. Exploit
    Satisfy high-complexity exploit prerequisites
  4. Execution
    Trigger unauthenticated vulnerability
  5. Impact
    Achieve full system takeover

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 the attacker to be physically or logically positioned on the same network segment (broadcast domain) as the hardware running Oracle Hyperion Infrastructure Technology version 11.2.25.0.000 - this is the AV:A constraint and is the primary limiting factor. No authentication is required (PR:N confirmed by CVSS vector). High attack complexity (AC:H) indicates that beyond adjacency, additional preconditions exist - likely a specific system state, timing window, or configuration condition during or after the Installation and Configuration lifecycle - though the exact prerequisite is not disclosed by Oracle. No user interaction is required. The vulnerability is specific to the Installation and Configuration component, suggesting it may only be exploitable when those services are active or network-exposed. Exploitation is not possible from the public internet without first gaining internal network access.

Impact

The CVSS 3.1 base score of 7.5 with vector AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H reflects a balanced but meaningful risk profile. The adjacent-network attack vector substantially constrains the attacker pool - exploitation requires physical or logical presence on the same network segment as the Hyperion host, ruling out opportunistic remote internet exploitation. High attack complexity (AC:H) further indicates that exploitation is not trivial and likely depends on specific timing, race conditions, or environmental prerequisites. However, the absence of any privilege requirement (PR:N) and the full CIA impact (C:H/I:H/A:H) up to and including system takeover elevate the severity for organizations where lateral movement from a compromised internal host is possible. No EPSS score was provided in the available data, which limits probabilistic exploitation forecasting. The vulnerability is not in the CISA KEV catalog and no POC is known, indicating no confirmed or widespread exploitation at time of analysis. The 'Information Disclosure' tag in the ENISA entry appears to understate the described impact - this discrepancy should be verified against the Oracle CSPU August 2026 advisory. For enterprises running Oracle Hyperion in segmented financial or ERP network zones, insider threat and compromised-workstation scenarios represent the most realistic attack paths.

Exploit ScenarioDerived

An attacker with access to the internal network segment hosting Oracle Hyperion Infrastructure Technology - such as a malicious insider, a compromised workstation on the same VLAN, or an attacker who has achieved lateral movement within the corporate network - sends specially crafted network traffic to the Installation and Configuration component of the Hyperion host. By satisfying the high-complexity exploitation prerequisites (exact nature unknown due to absent CWE and limited Oracle disclosure), the attacker triggers the vulnerability without requiring credentials, ultimately gaining full control over the Hyperion system. No public exploit code is known at this time, making this scenario more plausible for sophisticated or targeted threat actors than for opportunistic attackers.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Aug 19, 2026

Full system takeover of Oracle Hyperion Infrastructure Technology 11.2.25.0.000 is achievable by an unauthenticated attacker positioned on the same physical network segment as the affected host, exploiting a flaw in the Installation and Configuration component. The CVSS vector confirms adjacent-network vector (AV:A) with high attack complexity (AC:H), meaning exploitation requires specific conditions but no credentials. Despite the adjacent-network constraint limiting broad internet exposure, successful exploitation yields complete compromise of confidentiality, integrity, and availability. No public exploit identified at time of analysis, and this vulnerability is not listed in the CISA KEV catalog.

RemediationAI

Apply Oracle's Critical Security Patch Update for August 2026, available at https://www.oracle.com/security-alerts/cspuaug2026.html, which addresses this vulnerability. A vendor-released patch is available per the Oracle advisory, however no specific fixed version number was independently confirmed in the available data - consult the Oracle CPU advisory directly for the exact patched build. As a compensating control pending patching, isolate Oracle Hyperion Infrastructure Technology hosts into a dedicated, tightly controlled network segment using VLANs or firewall rules, restricting adjacency to only authorized administrative systems - this directly counters the AV:A attack vector and reduces the attacker-reachable population. Disable or restrict network-accessible Installation and Configuration services if they are not actively required post-deployment, which limits the exposed attack surface. Note that network segmentation mitigates but does not eliminate risk from compromised internal hosts already on the same segment.

Affected VersionsENISA

Oracle Hyperion Infrastructure Technology 11.2.25.0.000

Affected Packages

euvd oracle_hyperion_infrastructure_technology 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 Hyperion Infrastructure Technology is an enterprise business performance management and financial planning platform deployed in large organizations. The vulnerable component - Installation and Configuration - suggests the flaw may reside in network-exposed services active during or after the setup and configuration lifecycle of the platform. The CVSS adjacent-network attack vector (AV:A) indicates exploitation is bounded to the local broadcast domain or physical network segment where the Oracle Hyperion host resides, not the wider internet. No CWE identifier was assigned by Oracle or NVD, which obscures the root cause class - typical for Oracle CPU disclosures that intentionally limit technical detail. The affected version is specifically 11.2.25.0.000, confirmed by both the Oracle advisory and the ENISA EUVD entry EUVD-2026-61542. Tags indicate an information disclosure component, though the CVSS impact scores (C:H/I:H/A:H) and the described outcome of 'takeover' reflect a significantly more severe impact than disclosure alone.

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Severity by source

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

Adjacent-network vector and high complexity are well-supported; no privileges required and full CIA impact align with described system takeover outcome.

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

Primary rating from Vendor (oracle).

CVSS VectorVendor: oracle

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

DescriptionCVE.org

Vulnerability in the Oracle Hyperion Infrastructure Technology product of Oracle Hyperion (component: Installation and Configuration). The supported version that is affected is 11.2.25.0.000. Difficult to exploit vulnerability allows unauthenticated attacker with access to the physical communication segment attached to the hardware where the Oracle Hyperion Infrastructure Technology executes to compromise Oracle Hyperion Infrastructure Technology. Successful attacks of this vulnerability can result in takeover of Oracle Hyperion Infrastructure Technology. CVSS 3.1 Base Score 7.5 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H).

Executive ViewAI

Why It Matters

Oracle Hyperion Infrastructure Technology version 11.2.25.0.000 contains a network-based vulnerability that allows unauthenticated attackers on the same network segment to achieve complete system compromise, affecting confidentiality, integrity, and availability of critical operational infrastructure. This risk is elevated for organizations with multi-tenant or open network architectures where Hyperion components may be accessible from untrusted network segments. Without vendor patch availability, organizations require immediate network isolation and enhanced monitoring to maintain operational security.

Business Impact: High
Compensating Controls

Implement strict network segmentation isolating Oracle Hyperion Infrastructure Technology hosts to dedicated VLANs accessible only from authorized administrative networks; deploy network-based intrusion detection rules for this vulnerability; enforce strong local authentication controls and monitor authentication logs for unauthorized access attempts; disable or air-gap systems not in active use until vendor patch availability is confirmed.

Threat Intelligence Overview

EPSS Score
0.2%
Top 88% exploitable
Prevalence
Medium
enterprise financial planning platform, large-org deployments only
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 0.2%
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
Controlled
Automatable· derived
No
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

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