CVE-2026-83191

High

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. Difficult to exploit vulnerability allows unauthenticated attacker with network access via TCP to compromise Siebel CRM Deployment. Successful attacks of this vulnerability can result in takeover of Siebel CRM Deployment. 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).

SeverityHigh
CVSS8.1
Exploit probability—
ProductSiebel CRM Deployment
PublishedSep 15, 2026
First seenSep 15, 2026

How to fix

Affected products

ProductAffected versionsFixed in
Oracle Corporation Siebel CRM Deployment17.0 ≤ v ≤ 26.7—

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.

CVE-2026-83191 · Siebel CRM Deployment · Dark Radar