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Oracle Siebel CRM CVE-2026-101447

| EUVDEUVD-2026-105863 HIGH
2026-10-20 secalert_us@oracle.com GHSA-34fr-482q-4gh3
7.1
CVSS 3.1 · NVD
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Attack ChainAIDerived

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

  1. Access
    Obtain low-privileged Siebel account
  2. Delivery
    Craft malicious Workflow payload
  3. Exploit
    Lure victim user into interacting
  4. Execution
    Trigger flaw in Workflow component
  5. Impact
    Take over Siebel CRM Development

Vulnerability Assessment

Exploitation Conditions

Exploitation requires the attacker to already hold a low-privileged authenticated account on the target Siebel CRM Development instance (PR:L), reachable over HTTP (AV:N). It additionally requires human interaction from a different user (UI:R) - the attacker must induce a victim to interact with the malicious Workflow content - and the flaw is rated high-complexity (AC:H), implying specific timing, configuration, or conditions outside the attacker's direct control. These stacked prerequisites (valid credentials + victim social engineering + high complexity) materially limit realistic exploitation; it is not usable against default configurations by an unauthenticated remote attacker.

Impact

This is a genuinely moderate-priority issue rather than a top-tier emergency, and the CVSS 3.1 base score of 7.1 (High) somewhat overstates real-world urgency once the vector is unpacked. The vector CVSS:3.1/AV:N/AC:H/PR:L/UI:R indicates network reachability over HTTP but with HIGH attack complexity, a requirement for existing LOW privileges (an authenticated Siebel account), AND user interaction from a victim other than the attacker - three stacked conditions that substantially reduce the pool of practical attackers. Impact is severe where it lands: C:H/I:H/A:H with full takeover of Siebel CRM Development. No EPSS score was provided in the input, there is no CISA KEV listing, and no public exploit was referenced, so there is no evidence of active or at-scale exploitation - the signals do not conflict, they simply all point to low current exploitation likelihood against a high potential impact. Note a metadata tension worth flagging: the input Tags label this 'Information Disclosure,' but the description and CVSS (I:H/A:H plus 'takeover') describe full compromise, not mere disclosure - treat the tag as unreliable and rely on the CVSS impact metrics. Because it arrives via the standard Oracle quarterly Critical Patch Update (October 2026) rather than an out-of-band alert, routine patch-cycle prioritization is appropriate.

Exploit ScenarioDerived

A low-privileged but authenticated Siebel user crafts a malicious Workflow element or link and lures a higher-value Siebel user into interacting with it over HTTP, triggering the flaw during that victim's session. Because exploitation is rated high-complexity and depends on social-engineering a second human, success is situational rather than reliable. No public exploit code was identified at time of analysis.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.3% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 21, 2026

Takeover of the Siebel CRM Development component (Workflow) is achievable by a low-privileged authenticated attacker who can persuade a second user to interact with crafted Workflow content over HTTP; supported releases 25.12 through 26.9 are affected. Oracle rates this CVSS 3.1 base 7.1, but the vector (AC:H/PR:L/UI:R) stacks valid credentials, victim-driven social engineering, and high attack complexity, so it is a moderate-priority hardening item rather than an emergency. No public exploit code or active exploitation has been identified at time of analysis, and the issue is addressed through Oracle's Critical Patch Update program.

RemediationAI

Apply the fix from the Oracle Critical Patch Update for October 2026 (https://www.oracle.com/security-alerts/cpuoct2026.html), which is the vendor-released patch stream for this issue; the exact patched build number is not specified in the available data, so confirm the target release level with Oracle Support or My Oracle Support before closing the finding. Patch availability: Patch available per vendor advisory. Where patching must be staged, reduce exposure first by restricting network reachability to Siebel CRM Development and its Workflow endpoints to trusted administrative networks or VPN segments - a low-collateral control, though it will inconvenience distributed developers and any integrations that post workflow content. Review and prune low-privileged accounts that have workflow authoring or import entitlements, since the attack requires a valid low-privileged session; this can break legitimate delegated development workflows if entitlements are tightened too far. Disable or lock down workflow import/activation functionality for non-administrative roles where business processes allow, accepting that affected business automation may need manual handling in the interim. Because exploitation requires a second user to interact with attacker-supplied content, add user awareness and mail/web filtering targeted at workflow artefacts, and enable auditing of workflow creation, modification and activation events so attempts can be detected; audit logging carries storage and performance overhead that should be sized before wide rollout. Note there is no vendor-released patch identified outside the CPU cadence, so compensating controls should remain in place until the October 2026 CPU is fully applied.

Affected VersionsENISA

Siebel CRM Development 25.12 ≤26.9

Affected Packages

euvd siebel_crm_development 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

The flaw sits in the Workflow component of Oracle Siebel CRM Development, the tooling layer used to build, deploy and modify Siebel business-process workflows (workflow processes, policies, runtime events and related metadata). Because workflows execute with application-level privileges and can drive data reads, writes and downstream service calls, a malicious or tampered workflow definition is a natural vector for confidentiality, integrity and availability impact - consistent with the C:H/I:H/A:H ratings and Oracle's 'takeover' classification. The vector AV:N/AC:H/PR:L/UI:R/S:U indicates the attacker connects over HTTP with an already-provisioned low-privileged Siebel account, must overcome non-trivial timing or configuration dependencies, and must convince a different user to perform an action (for example opening or activating attacker-supplied workflow content). Scope is Unchanged, so impact is contained within Siebel's own security authority rather than crossing into the host OS. No CWE identifier was supplied in the source data, so the weakness class is best inferred from the vector and Oracle's component taxonomy rather than from a formal classification; the 'Information Disclosure' tagging in the source metadata highlights one likely impact dimension but the CVSS ratings indicate modification and disruption are also in scope.

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Severity by source

NVD PRIMARY 7.1 HIGH
AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
vuln.today AI 7.1 HIGH

HTTP-reachable so AV:N; needs an authenticated low-priv account (PR:L) plus victim interaction (UI:R) and non-trivial conditions (AC:H); full takeover yields C:H/I:H/A:H, scope unchanged.

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

Primary rating from NVD.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

DescriptionNVD

Vulnerability in the Siebel CRM Development product of Oracle Siebel CRM (component: Workflow). Supported versions that are affected are 25.12-26.9. Difficult to exploit vulnerability allows low privileged attacker with network access via HTTP to compromise Siebel CRM Development. Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in takeover of Siebel CRM Development. CVSS 3.1 Base Score 7.1 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H).

Executive ViewAI

Why It Matters

Oracle Siebel CRM releases 25.12 through 26.9 carry a high-severity workflow development risk that requires a valid low-privileged account plus a second user’s interaction, concentrating practical exposure among workflow developers and administrators rather than the full CRM user base. Leadership should care because manipulated workflow content could disrupt CRM process automation and require cross-team cleanup, but no public exploit identified at time of analysis and the high attack complexity make this a hardening priority rather than an emergency.

Business Impact: Medium
Compensating Controls

No vendor-released patch identified at time of analysis; restrict access to the Siebel CRM Workflow development component to authorized users, enforce least privilege and separation of duties, monitor workflow changes and HTTP requests for crafted content, provide user awareness training on social engineering, and apply the Oracle Critical Patch Update fix when released.

Threat Intelligence Overview

EPSS Score
0.3%
Top 80% exploitable
Prevalence
Medium
Enterprise CRM used by large organizations, not universally deployed
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 0.3%
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
No
Human Impact
Medium

Priority Score

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

Attack Technique

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

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