CVE-2026-47018

Analyzed Analyzed - Analysis Complete

Denial of Service in Siebel CRM Cloud Applications

Publication date: 2026-07-21

Last updated on: 2026-08-05

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

2026-08-05

Generated

2026-08-11

AI Q&A

2026-07-22

EPSS Evaluated

2026-08-09

NVD

CVE-2026-47018

EUVD

EUVD-2026-46507

Affected Vendors & Products

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

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-400	The product does not properly control the allocation and maintenance of a limited resource.

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.

Detection Guidance

This vulnerability affects Oracle Siebel CRM Cloud Applications versions 22.3-26.5. Detection requires checking the installed version of Siebel CRM Cloud Applications. If the version is within the affected range, the system is vulnerable. No specific commands are provided in the context to detect exploitation attempts.

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.

Compliance Impact

This vulnerability causes denial-of-service (DOS) conditions in Oracle Siebel CRM Cloud Applications, leading to system unavailability. Such disruptions may violate compliance requirements under GDPR (data processing availability) and HIPAA (system access and reliability for protected health information).

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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