CVE-2026-91421 Vulnerability in the Siebel CRM Deployment product of Oracle Siebel CRM (component: Server Infrastructure).
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-91421?
CVE-2026-91421 is a medium-severity vulnerability in Oracle Corporation Siebel CRM Deployment, published on 20 Oct 2026.
Official description
Vulnerability in the Siebel CRM Deployment product of Oracle Siebel CRM (component: Server Infrastructure). Supported versions that are affected are 17.0-26.9. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTP to compromise Siebel CRM Deployment. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Siebel CRM Deployment. CVSS 3.1 Base Score 5.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H).
Weakness: CWE-400
Which versions are affected by CVE-2026-91421?
How do I fix CVE-2026-91421?
No fix has been published for CVE-2026-91421 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-91421 being exploited?
There is no known exploitation of CVE-2026-91421 in the wild and no public exploit code.
Sources
Also known as GHSA-wg7q-65mg-g8qw.