CVE-2026-87251CWE-287CWE-306

CVE-2026-87251

Critical · published October 21, 2026

CVSS v3.1
9.8
EPSS
0%
Percentile
38.1
In the wild
Unconfirmed
What it is

Vulnerability in the Oracle Access Manager product of Oracle Fusion Middleware (component: Authentication Engine). Supported versions that are affected are 12.2.1.4.0 and 14.1.2.1.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via SAML to compromise Oracle Access Manager. Successful attacks of this vulnerability can result in takeover of Oracle Access Manager. CVSS 3.1 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00450 · 38.1th percentile
Weaknesses
CWE-287 · Improper Authentication; CWE-306 · Missing Authentication for Critical Function
Published
2026-10-21T02:20Z
References (1)
https://www.oracle.com/security-alerts/cpuoct2026.html · [email protected]
EPSS history
Timeline
  • 22 OCT 03:35Z
    EPSS moved — → 0%
    epss
  • 20 OCT 21:23Z
    Vulnerability in the Oracle Access Manager product of Oracle Fusion Middleware (component: Authentication Engine)
    cvelistv5
  • 20 OCT 21:23Z
    Vulnerability in the Oracle Access Manager product of Oracle Fusion Middleware (component: Authentication Engine)
    cvelistv5