CVE-2026-83155 Missing authorization in Siebel CRM Deployment
Low-privileged attackers on the local network can access all data and cause denial of service in Siebel CRM Deployment.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-83155?
CVE-2026-83155 is a high-severity missing authorization vulnerability in Oracle Corporation Siebel CRM Deployment, published on 15 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Vulnerability in the Siebel CRM Deployment product of Oracle Siebel CRM (component: Server Infrastructure). Supported versions that are affected are 17.0-26.7. Easily exploitable vulnerability allows low privileged attacker with access to the physical communication segment attached to the hardware where the Siebel CRM Deployment executes to compromise Siebel CRM Deployment. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Siebel CRM Deployment accessible data and unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Siebel CRM Deployment. CVSS 3.1 Base Score 7.3 (Confidentiality and Availability impacts). CVSS Vector: (CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H).
Weakness: CWE-284
Which versions are affected by CVE-2026-83155?
How do I fix CVE-2026-83155?
No fix has been published for CVE-2026-83155 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-2026-83155 being exploited?
There is no known exploitation of CVE-2026-83155 in the wild and no public exploit code.
Sources
Also known as GHSA-74j3-hm5q-hqf8.