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Oracle Siebel CRM CVE-2026-101464

| EUVDEUVD-2026-105880 HIGH
Improper Access Control (CWE-284)
2026-10-20 secalert_us@oracle.com GHSA-jrwc-ggmq-qgm2
7.1
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
    Obtain low-privileged logon to Siebel host
  2. Exploit
    Reach Server Infrastructure component
  3. Execution
    Exploit authorization flaw
  4. Impact
    Read and modify Siebel-accessible 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

Requires an attacker to already hold a low-privileged logon (PR:L) to the infrastructure/host where the Siebel CRM Deployment Server Infrastructure component executes; the vector is local only (AV:L), so it cannot be triggered remotely over the network and no user interaction is needed (UI:N). Limiting factors: the attacker must first gain authenticated local/interactive access to the Siebel server, affected versions are Siebel CRM Deployment 17.0 through 26.9, and there is no availability impact. These constraints mean practical exploitation is confined to insiders or attackers who have already achieved a foothold on the Siebel host.

Impact

This is a genuine but moderate-priority issue rather than a drop-everything emergency. The CVSS 3.1 vector (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N, base 7.1) is the strongest available signal: exploitation requires LOCAL access (AV:L) and an existing low-privileged authenticated session (PR:L) on the host where Siebel CRM Deployment runs, which substantially caps real-world reach compared to a network-exploitable flaw. Once those preconditions are met, complexity is low (AC:L) and impact is high for both confidentiality and integrity (C:H/I:H), with no availability impact (A:N). No EPSS score was provided, the CVE is not listed in CISA KEV, and no public proof-of-concept was supplied - so there is no public exploit identified at time of analysis and no evidence of active exploitation. The input 'Authentication Bypass' tag directly conflicts with the CVSS vector: PR:L and the description's phrase 'low privileged attacker with logon' indicate an authenticated-privilege-escalation/data-access flaw, NOT a pre-authentication bypass - this tag appears mislabeled and should be treated with skepticism. Overall: a real local post-authentication risk warranting patching in the normal Oracle CPU cycle, but the local-only vector and authentication requirement make mass or remote exploitation unlikely.

Exploit ScenarioDerived

An attacker who already has a low-privileged local or interactive logon on the server hosting Siebel CRM Deployment (for example a limited application or OS account, or a malicious insider) abuses a Server Infrastructure flaw to read and modify data beyond their authorization. Because attack complexity is low and no user interaction is required, the attacker can reliably reach all Siebel CRM Deployment-accessible data to create, delete, or alter critical records. No public exploit code is known at time of analysis, so exploitation would require independent development.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 21, 2026

Access-control bypass in Oracle Siebel CRM Deployment 17.0 through 26.9 allows an authenticated local low-privileged user on the Siebel host to read or modify critical data through the Server Infrastructure component. The CVSS 3.1 vector requires local access and a valid low-privileged logon (AV:L/PR:L/UI:N), with high confidentiality and integrity impact but no availability impact. No public exploit code or CISA KEV activity was identified at time of analysis, and EPSS was not supplied.

RemediationAI

Patch available per vendor advisory: apply the Oracle Critical Patch Update October 2026 fix for Siebel CRM Deployment Server Infrastructure. The supplied data does not include an exact fixed build number, so confirm the patched release in the Oracle CPU advisory at https://www.oracle.com/security-alerts/cpuoct2026.html. Until patched, restrict interactive logon and local access to Siebel hosts to trusted administrators, remove unnecessary low-privileged accounts, enforce least privilege, and monitor audit logs for unauthorized creation, deletion, or modification of Siebel data. These controls reduce exposure but do not eliminate the flaw; because the vector is local (AV:L), network blocking alone is not a complete mitigation.

Affected VersionsENISA

Siebel CRM Deployment 17.0 ≤26.9

Affected Packages

euvd siebel_crm_deployment 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 Siebel CRM Deployment is an enterprise CRM deployment and server infrastructure product. The supplied advisory does not assign a CWE, but the Authentication Bypass tag and the CVSS vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N describe a local, low-privileged, no-user-interaction weakness in the Server Infrastructure component that can bypass intended access controls and expose or alter data. No CPE strings were provided; EUVD lists the affected range as Siebel CRM Deployment 17.0 through 26.9. Because the vector is AV:L, exploitation cannot be triggered remotely over the network and is confined to attackers who already have authenticated local/interactive access to the Siebel host.

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Severity by source

Vendor (oracle) PRIMARY 7.1 HIGH
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
vuln.today AI 7.1 HIGH

Description requires an existing low-privileged logon to the local Siebel host, so AV:L and PR:L; high data read/modify but no availability effect gives C:H/I:H/A:N.

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

Primary rating from Vendor (oracle).

CVSS VectorVendor: oracle

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

DescriptionCVE.org

Vulnerability in the Siebel CRM Deployment product of Oracle Siebel CRM (component: Server Infrastructure). Supported versions that are affected are 17.0-26.9. Easily exploitable vulnerability allows low privileged attacker with logon to the infrastructure where Siebel CRM Deployment executes to compromise Siebel CRM Deployment. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Siebel CRM Deployment accessible data as well as unauthorized access to critical data or complete access to all Siebel CRM Deployment accessible data. CVSS 3.1 Base Score 7.1 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N).

Executive ViewAI

Why It Matters

Oracle Siebel CRM Deployment versions 17.0 through 26.9 contain a high-severity access-control bypass that allows an authenticated local low-privileged user on the Siebel host to read or modify critical data through the Server Infrastructure component. No public exploit identified at time of analysis, and no vendor-released patch identified at time of analysis. Leadership should care because compromise of CRM data confidentiality and integrity could affect customer trust, regulatory compliance, and business operations, though exploitation requires local access and a valid low-privileged account.

Business Impact: High
Compensating Controls

Restrict local interactive logon to Siebel hosts to authorized administrators, enforce least privilege and separation of duties for low-privileged accounts, enable and monitor audit logs for anomalous data access or modification, segment Siebel hosts from general user networks, and monitor Oracle advisories for a vendor patch.

Threat Intelligence Overview

EPSS Score
0.1%
Top 96% exploitable
Prevalence
Medium
enterprise CRM common in large orgs, not everywhere
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 0.1%
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
Defer
Exploitation· derived
None
System Exposure· derived
Small
Automatable· derived
No
Human Impact
High

Priority Score

36
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +36
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

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