---
id: "CVE-2026-101400"
kind: "vulnerability"
aliases: ["CVE-2026-101400"]
title: "Oracle Siebel Marketing: local attacker can cause partial denial of service"
severity: "low"
cvss: 2.9
epss: null
exploited: false
status: "open"
category: "vendor"
products: []
ecosystems: []
tags: ["enterprise-crm", "oracle", "siebel-crm", "vendor"]
not_affected_if: ["not-running-siebel"]
published_at: "2026-10-20T22:17:47+00:00"
first_seen_at: "2026-10-23T21:57:21+00:00"
updated_at: "2026-10-25T04:47:57+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-101400", "first_seen_at": "2026-10-23T21:57:21+00:00"}]
---

# Oracle Siebel Marketing: local attacker can cause partial denial of service

Oracle Siebel CRM's Marketing component, supported versions 17.0 through 26.9, has a flaw that lets an unauthenticated attacker who already has logon to the host cause a partial denial of service. The CVSS 3.1 score is 2.9 with only availability impact.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check whether Siebel CRM Marketing is deployed and which version is installed, versions 17.0 to 26.9 are listed as affected
- unknown

## Fix

- Apply the Oracle Siebel CRM Marketing patch for the affected release (fixed version unknown from sources)
- unknown

## Timeline

- 2026-10-23T21:57:21+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-101400

## From the sources

Vulnerability in the Siebel Apps - Marketing product of Oracle Siebel CRM (component: Marketing).  Supported versions that are affected are 17.0-26.9. Difficult to exploit vulnerability allows unauthenticated attacker with logon to the infrastructure where Siebel Apps - Marketing executes to compromise Siebel Apps - Marketing.  Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of Siebel Apps - Marketing. CVSS 3.1 Base Score 2.9 (Availability impacts).  CVSS Vector: (CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L).

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_