CVE-2026-91440CWE-284broken-access-control

CVE-2026-91440

Medium · published October 21, 2026

CVSS v3.1
6.5
EPSS
0%
Percentile
18.1
In the wild
Unconfirmed
What it is

Vulnerability in the Siebel CRM Deployment product of Oracle Siebel CRM (component: Server Infrastructure). Supported versions that are affected are 17.0-26.9. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Siebel CRM Deployment. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Siebel CRM Deployment accessible data as well as unauthorized read access to a subset of Siebel CRM Deployment accessible data. CVSS 3.1 Base Score 6.5 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N).

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00269 · 18.1th percentile
Weakness
CWE-284 · Improper Access Control
Published
2026-10-21T02:20Z
References (1)
EPSS history
Timeline
  • 22 OCT 03:36Z
    EPSS moved — → 0%
    epss
  • 20 OCT 21:25Z
    Vulnerability in the Siebel CRM Deployment product of Oracle Siebel CRM (component: Server Infrastructure)
    cvelistv5
  • 20 OCT 21:25Z
    Vulnerability in the Siebel CRM Deployment product of Oracle Siebel CRM (component: Server Infrastructure)
    cvelistv5