CVE-2026-46920

Unauthenticated HTTP Authorization Bypass Allowing Full Compromise of Siebel CRM Cloud Applications

Published Jun 16, 2026 CVSS 3.1 · 8.1 High EPSS < 1% KEV · Not listed

Description

Vulnerability in the Siebel CRM Cloud Applications product of Oracle Siebel CRM (component: Siebel Cloud Manager). Supported versions that are affected are 17.0-26.5. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTP to compromise Siebel CRM Cloud Applications. Successful attacks of this vulnerability can result in takeover of Siebel CRM Cloud Applications. CVSS 3.1 Base Score 8.1 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H).

Analysis

Technical impact

The flaw lies in the Siebel Cloud Manager component of Oracle Siebel CRM Cloud Applications. An unauthenticated attacker who can reach the system via HTTP can bypass authentication and fully compromise the application. The vulnerability can lead to loss of confidentiality, integrity and availability, effectively allowing the attacker to take over the application. This impact is inferred directly from the CVE description and the stated valid impact type in the CVSS vector.

Affected Systems

Oracle Corporation’s Siebel CRM Cloud Applications versions 17.0 through 26.5 are impacted. The affected component, Siebel Cloud Manager, is present in all deployments of this product.

Risk and Exploitability

The CVSS score of 8.1 marks high severity. EPSS < 1% suggests the exploit of this vulnerability is currently infrequent, and it is not listed in the CISA KEV catalog. Exploitation is possible simply by connecting to the exposed HTTP interface; no authentication, privilege escalation or user interaction is required, indicating a path to complete takeover of the application as described.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Oracle Corporation

Siebel CRM Cloud Applications

affected

Version	Status	Constraints
`17.0`	affected	≤ 26.5

Configuration 1 [-]

cpe:2.3:a:oracle:siebel_crm:*:*:*:*:*:*:*:*

No data.

Vendor Product Versions

Oracle

Siebel Crm Cloud Applications

Version	Status	Scheme	Platform
`[17.0,26.5]`	affected	generic	—

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

Apply the latest Oracle patch or upgrade to a version that fixes the described flaw, as outlined in Oracle’s security advisory.
Restrict inbound HTTP access to the Siebel Cloud Manager to a trusted IP whitelist or through a VPN, and enforce network segmentation to limit exposure.
Monitor application and network logs for abnormal authentication or application behavior, and set alerts for potential takeover attempts.

Generated by OpenCVE AI on June 18, 2026 at 23:54 UTC.

Tracking

Advisories

No advisories available

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.291% probability within 30 days)

Exploitation none

Automatable no

Technical Impact total

References

Link	Providers
https://www.oracle.com/security-alerts/cspujun2026.html

History

Jun 19, 2026 12:15 AM Title updated View changes

Type	Values Removed	Values Added
Title		Unauthenticated HTTP Authorization Bypass Allowing Full Compromise of Siebel CRM Cloud Applications

Jun 18, 2026 10:30 PM Title updated. Weaknesses updated View changes

Type	Values Removed	Values Added
Title	Unauthenticated HTTP Attack Enables Full Compromise of Oracle Siebel CRM Cloud Applications
Weaknesses	CWE-287

Jun 18, 2026 4:45 AM Title updated. Weaknesses updated. Scoring metrics updated View changes

Type	Values Removed	Values Added
Title		Unauthenticated HTTP Attack Enables Full Compromise of Oracle Siebel CRM Cloud Applications
Weaknesses		CWE-284 CWE-287 CWE-306
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Jun 16, 2026 8:45 PM Description updated. First appearance in the feed. Affected versions updated. Affected vendors updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
Description		Vulnerability in the Siebel CRM Cloud Applications product of Oracle Siebel CRM (component: Siebel Cloud Manager). Supported versions that are affected are 17.0-26.5. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTP to compromise Siebel CRM Cloud Applications. Successful attacks of this vulnerability can result in takeover of Siebel CRM Cloud Applications. CVSS 3.1 Base Score 8.1 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H).
First Time appeared		Oracle Oracle siebel Crm Cloud Applications
CPEs		cpe:2.3:a:oracle:siebel_crm_cloud_applications::::::::
Vendors & Products		Oracle Oracle siebel Crm Cloud Applications
References		https://www.oracle.com/security-alerts/cspujun2026.html
Metrics		cvssV3_1 `{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'}`