CVE-2026-83203 Missing authorization in Siebel CRM End User
Unauthenticated attackers can access, modify, or disrupt Siebel CRM End User data via HTTP due to missing authorization controls.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-83203?
CVE-2026-83203 is a high-severity missing authorization vulnerability in Oracle Corporation Siebel CRM End User, published on 15 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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 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).
Weakness: CWE-284
Which versions are affected by CVE-2026-83203?
How do I fix CVE-2026-83203?
No fix has been published for CVE-2026-83203 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-83203 being exploited?
There is no known exploitation of CVE-2026-83203 in the wild and no public exploit code.
Sources
Also known as GHSA-pf93-3c33-75vw.