Critical severity · published Sep 15, 2026
CVE-2026-83154
Vulnerability in the Siebel CRM End User product of Oracle Siebel CRM (component: Open UI)
9.1
CVSS
0.4%
EPSS
No
On KEV
Description
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 SOAP to compromise Siebel CRM End User. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Siebel CRM End User accessible data as well as unauthorized access to critical data or complete access to all Siebel CRM End User accessible data. CVSS 3.1 Base Score 9.1 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N).
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 37% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SC
Siebel CRM End User · Oracle Corporation
17.0 through 26.7 · source: vendor
SC
Siebel Crm · Oracle
17.0 through 26.7 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-83154
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-83154
Vendor Advisory
https://www.oracle.com/security-alerts/cspusep2026.html
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