Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessGain adjacency to Siebel hosting network segment
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DeliveryIdentify exposed Siebel Cloud Manager service
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ExploitSatisfy high-complexity attack conditions (protocol manipulation or timing)
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ExecutionBypass authentication controls
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PersistRead subset of CRM data
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ImpactPerform unauthorized data insert or modification
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 adjacent to the network segment where the Siebel CRM Cloud Applications hardware operates - specifically the same LAN, VLAN, subnet, or broadcast domain, not reachable from the general internet. Additionally, AC:H indicates that exploitation demands high-complexity conditions beyond mere adjacency, such as specific protocol-level manipulation or precise timing, whose exact nature is not detailed in the available description. No authentication is required (PR:N) and no user interaction is needed (UI:N). Exploitation is concretely limited by: (1) physical or logical network proximity to the Siebel hosting environment, a significant barrier in isolated cloud deployments; (2) high attack complexity reducing exploitation reliability and ruling out automated scanning or commodity tools; and (3) constrained impact limited to partial data read and partial data modification with no availability impact. Organizations with Siebel deployed in fully isolated private cloud VPCs or air-gapped environments face minimal realistic risk. |
| Impact | The CVSS 3.1 base score of 4.2 (Medium) realistically reflects the exploitation constraints. AV:A is a meaningful barrier in cloud deployments where network segments are typically isolated from general-internet access and from one another; this limits the attacker pool to insiders, compromised adjacent hosts, or those who have already gained data-center-level access. AC:H further depresses exploitability, requiring conditions beyond simple network adjacency - details of which are not fully described in the available data. Impact is bounded: partial confidentiality (C:L) and partial integrity (I:L) with no availability impact, meaning an attacker cannot cause denial of service or fully exfiltrate the CRM database. No EPSS data was provided. The CVE is absent from CISA KEV, indicating no confirmed active exploitation. No public POC has been identified. The 'Authentication Bypass' tag elevates concern over a purely configuration-class flaw, but the combination of adjacency and high complexity makes opportunistic mass exploitation implausible. Organizations running Siebel in shared or semi-trusted network environments (co-location facilities, shared VLANs, hybrid cloud with insufficient segmentation) carry meaningfully higher real-world risk than those in fully isolated private cloud VPCs. |
| Exploit ScenarioDerived | An attacker with access to the same network segment as the Oracle Siebel CRM Cloud Applications infrastructure - such as a malicious insider, a compromised host on the same VLAN, or an attacker who has breached the data center network perimeter - could craft or manipulate network-layer traffic targeting the Siebel Cloud Manager component under high-complexity conditions. If successful, the attacker reads a subset of CRM records (potentially including customer or transactional data) and performs unauthorized data inserts or modifications without valid credentials. No public proof-of-concept exists, and the high attack complexity makes reliable exploitation require significant attacker capability and preparation. |
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Alert meAnalysisAIv1 – Jul 22, 2026
Unauthorized data access and manipulation is possible in Oracle Siebel CRM Cloud Applications (versions 22.3 through 26.5) via a flaw in the Siebel Cloud Manager component, tagged as an Authentication Bypass. An unauthenticated attacker positioned on the same physical network segment as the hosting hardware can, under high-complexity conditions, read a subset of accessible CRM data and perform unauthorized inserts or modifications. No confirmed active exploitation (CISA KEV) and no public proof-of-concept have been identified at time of analysis, and the CVSS 4.2 score accurately reflects the constrained adjacency and complexity requirements.
RemediationAI
Apply Oracle's July 2026 Critical Patch Update (CPU), referenced at https://www.oracle.com/security-alerts/cpujul2026.html, which addresses this vulnerability. An exact fixed version number was not independently confirmed in the available source data - consult the Oracle CPU July 2026 documentation directly for the precise patched release target. As a compensating control pending patching, enforce strict network segmentation using VLANs or micro-segmentation to isolate the Siebel CRM Cloud Applications hosting environment from shared or untrusted network segments; this directly neutralizes the AV:A attack vector by preventing unauthorized hosts from reaching the physical communication layer. Additionally, implement network-layer access controls such as 802.1X port-based authentication or firewall ACLs on the hosting segment to prevent unauthorized device attachment. These controls reduce attack surface but do not remediate the underlying authentication bypass flaw, so patching via the Oracle CPU remains the definitive fix.
Affected VersionsENISA
Affected Packages
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
The vulnerability resides in the Siebel Cloud Manager component of Oracle Siebel CRM Cloud Applications, an enterprise customer relationship management platform delivered as a cloud service. The CVSS vector AV:A (Adjacent Network) constrains exploitation to attackers who are on the same physical or logical network segment - such as the same LAN, VLAN, subnet, or broadcast domain - as the hardware where the Siebel workload executes. AC:H (High Complexity) indicates exploitation is not straightforward and likely requires specific network-level conditions, protocol manipulation, or precise timing. No CWE identifier was assigned, but the intelligence tag 'Authentication Bypass' points toward a root cause class consistent with CWE-287 (Improper Authentication) or CWE-306 (Missing Authentication for Critical Function), wherein the Siebel Cloud Manager fails to properly enforce identity verification before granting access to data operations. Affected versions span 22.3 through 26.5, a multi-year release window, broadening the installed base exposed.
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Severity by source
AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Adjacent vector and high complexity reflect physical segment requirement and non-trivial exploitation conditions; C:L and I:L match the described partial data read and modification impact with no availability effect.
Primary rating from Vendor (oracle).
CVSS VectorVendor: oracle
DescriptionCVE.org
Vulnerability in the Siebel CRM Cloud Applications product of Oracle Siebel CRM (component: Siebel Cloud Manager). Supported versions that are affected are 22.3-26.5. Difficult to exploit vulnerability allows unauthenticated attacker with access to the physical communication segment attached to the hardware where the Siebel CRM Cloud Applications executes to compromise Siebel CRM Cloud Applications. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Siebel CRM Cloud Applications accessible data as well as unauthorized read access to a subset of Siebel CRM Cloud Applications accessible data. CVSS 3.1 Base Score 4.2 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N).
Threat Intelligence Overview
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.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.
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EUVD-2026-47058
GHSA-2rv2-px6h-wrwh
NVD
CVE.org
EPSS
Vulnrichment
VulDB
Exploit-DB