CVE-2026-83203
HighCVSS 8.6Exploitation Probability (EPSS)
Low risk31th percentile - higher than 31% of all known CVEs
Summary
Vulnerability in the Siebel CRM End User product of Oracle Siebel CRM (component: Open UI) affecting versions 17.0-26.7. Easily exploitable by an unauthenticated attacker with network access via HTTP. Successful attacks can result in unauthorized access to critical data, unauthorized data modifications, and partial DOS.
Risk Assessment
An unauthenticated attacker can access critical data, modify it, and cause partial DOS in the Siebel CRM End User component. The CVSS score of 8.6 indicates very high risk.
Recommendation
Immediately apply Oracle patches for versions 17.0-26.7 and restrict HTTP access to the Open UI component. Monitor for unusual requests and unauthorized access attempts.
Other vulnerabilities in Oracle Siebel CRM
See all- CVE-2026-91393Low
Vulnerability in Oracle Siebel CRM End User (Open UI component) affecting versions 17.0-26.9. A difficult-to-exploit flaw allows an unauthenticated network attacker via HTTP to modify, insert, or delete some data, but requires user interaction.
- CVE-2026-91392Low
Vulnerability in Oracle Siebel CRM End User (Open UI component) affecting versions 17.0-26.9. A difficult-to-exploit flaw allows an unauthenticated network attacker via HTTP to modify, insert, or delete some data without user interaction.
- CVE-2026-91391Low
Vulnerability in Oracle Siebel CRM End User (Open UI component) affecting versions 17.0-26.9. A difficult-to-exploit flaw allows an unauthenticated network attacker via HTTP to read a subset of data without authorization.
- CVE-2026-91390Medium
Vulnerability in the Open UI component of Siebel CRM End User (versions 17.0-26.9). A low-privileged attacker with HTTP network access can, with user interaction, perform unauthorized modification and read access to some data, potentially impacting additional products.
- CVE-2026-91389Medium
Vulnerability in the Open UI component of Siebel CRM End User (versions 17.0-26.9). A low-privileged attacker with HTTP network access can, with user interaction, perform unauthorized modification and read access to some data, potentially impacting additional products.
- CVE-2026-91388Medium
Vulnerability in the Open UI component of Siebel CRM End User (versions 17.0-26.9). A difficult-to-exploit flaw allows an unauthenticated attacker with HTTP network access, with user interaction, to perform unauthorized modification and read access to some data, potentially impacting additional products.
- CVE-2026-91387Medium
Vulnerability in the Open UI component of Siebel CRM End User (versions 17.0-26.9). A low-privileged attacker with HTTP network access can perform unauthorized modification and read access to some data.
- CVE-2026-91372Low
Vulnerability in Oracle Siebel CRM Cloud Applications (Siebel Cloud Manager component) affecting versions 22.3-26.9. An easily exploitable flaw allows a low-privileged attacker with local access to read a subset of data without authorization.
- CVE-2026-101476Medium
Vulnerability in the Siebel Apps - Marketing product of Oracle Siebel CRM (component: Marketing). An unauthenticated attacker with network access via HTTP can easily exploit this vulnerability, but successful attacks require human interaction. This can result in unauthorized update, insert or delete access to some Siebel Apps - Marketing accessible data.
- CVE-2026-101468High
Vulnerability in Oracle Siebel CRM Deployment (component: Cloud Gateway). An unauthenticated attacker with network access via HTTP can gain unauthorized access to critical data or all data accessible in Siebel CRM Deployment.
Original NVD description (English source)
Vulnerability in the Siebel CRM End User product of Oracle Siebel CRM (component: Open UI). Supported versions that are affected are 17.0-26.7. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Siebel CRM End User. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Siebel CRM End User accessible data as well as unauthorized update, insert or delete access to some of Siebel CRM End User accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Siebel CRM End User. CVSS 3.1 Base Score 8.6 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L).
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

