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TI-2026-77128 Aliases CVE-2026-87251GHSA-9m34-ch75-mhw4

Oracle Access Manager flaw allows unauthenticated SAML takeover

Priority MEDIUM 49CWE-287Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-287.

Summary

Oracle Access Manager versions 12.2.1.4.0 and 14.1.2.1.0 of Oracle Fusion Middleware's Authentication Engine component contain a flaw (CWE-287, CWE-306) that lets an unauthenticated attacker with network access compromise the product over SAML. Successful exploitation can lead to takeover of Oracle Access Manager. The CNA scored it 9.8 (CVSS 3.1, CRITICAL), with high confidentiality, integrity and availability impact. CISA's SSVC assessment marks it as automatable with total technical impact and no known exploitation; it is not listed in CISA KEV.

Written with Claude Haiku 5.5 from the sources below · 2026-11-04

Description from the CNA

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).

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00487 42nd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
OracleOracle Access Manager12.2.1.4.0; 14.1.2.1.0—No fix listedCNA
  • Oracle Access Manager VendorOracle Affected 12.2.1.4.0; 14.1.2.1.0 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:oracle:access_manager:12.2.1.4.0:*:*:*:*:*:*:*12.2.1.4.0VulnerableOracle
cpe:2.3:a:oracle:access_manager:14.1.2.1.0:*:*:*:*:*:*:*14.1.2.1.0VulnerableOracle
  • cpe:2.3:a:oracle:access_manager:12.2.1.4.0:*:*:*:*:*:*:* Versions 12.2.1.4.0 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:access_manager:14.1.2.1.0:*:*:*:*:*:*:* Versions 14.1.2.1.0 Vulnerable ·Oracle

Remediation

The sources list no fixed version for the affected releases, 12.2.1.4.0 and 14.1.2.1.0. Watch for a patch from Oracle and apply it when it is released.

Written with Claude Haiku 5.5 from the sources below · 2026-11-04

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    Oracle Access Manager — oracle.com/security-alerts/cpuoct2026.html

    6 records Highest priority Priority MEDIUM 4 MEDIUM, 2 LOW

    Other records, highest priority first

    • TI-2026-77178 Oracle Access Manager flaw exposes data to unauthenticated attackersPriority MEDIUM 43
    • TI-2026-77116 Improper access control in Oracle Access Manager authenticationPriority MEDIUM 43
    • TI-2026-77118 Improper authentication in Oracle Access Manager lets attackers change dataPriority MEDIUM 40
    Show all 6 records → Advisory →

Timeline

  1. 2026-10-21 Threatist record created from CVE-2026-87251
  2. 2026-10-21 Alias added: GHSA-9m34-ch75-mhw4
  3. 2026-10-21 Weakness changed · CISA ADP
  4. 2026-10-21 CISA SSVC decision points changed

References

Advisory 1

  • TI-2021-14313 Missing authentication in Oracle Access Manager KEVCVSS 3.1CRITICAL 9.8
  • TI-2020-02258 Deserialization of untrusted data in Oracle WebCenter Portal KEVCVSS 3.1CRITICAL 9.8
  • TI-2018-02188 Vulnerability in the Oracle Access Manager component of Oracle Fusion Middleware… CVSS 3.0CRITICAL 9.0
  • TI-2026-51962 Improper authentication in Oracle Access Manager CVSS 3.1CRITICAL 9.8
  • TI-2026-51959 Improper authentication in Oracle Access Manager CVSS 3.1CRITICAL 9.8
  • TI-2026-51952 Improper authentication in Oracle Access Manager CVSS 3.1CRITICAL 9.8
See all 56 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences