Denial of Service in Siebel CRM Cloud Applications

Publication date: 2026-07-21

Last updated on: 2026-07-21

Assigner: Oracle

Description

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. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTPS to compromise Siebel CRM Cloud Applications. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Siebel CRM Cloud Applications. CVSS 3.1 Base Score 7.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

CVSS Scores

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Meta Information

Published

2026-07-21

Last Modified

2026-07-21

Generated

2026-07-22

AI Q&A

2026-07-22

EPSS Evaluated

N/A

NVD

CVE-2026-47018

Affected Vendors & Products

Vendor	Product	Version / Range
oracle	siebel_crm_cloud_applications	From 22.3 (inc) to 26.5 (inc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This is a denial-of-service (DoS) vulnerability in Oracle Siebel CRM Cloud Applications. It allows an unauthenticated attacker to remotely crash the application by sending specially crafted HTTPS requests, causing it to hang or repeatedly crash without requiring any user interaction or authentication.

Impact Analysis

If exploited, this vulnerability could disrupt access to Siebel CRM Cloud Applications, leading to downtime and preventing legitimate users from using the system. This could affect business operations, customer service, and data access.

Mitigation Strategies

Apply the latest Oracle Siebel CRM Cloud Applications patches or updates for versions 22.3-26.5 to address the vulnerability. Ensure network access controls restrict HTTPS traffic to trusted sources only.

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