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TI-2026-77109 Aliases CVE-2026-83399GHSA-xphr-m446-69p7

Missing authentication in Oracle WebLogic Server enables 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 WebLogic Server versions 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0 and 15.1.1.0.0 are affected, in the Core component. Missing authentication for critical functionality (CWE-306) lets an unauthenticated remote attacker with network access over T3 or IIOP take over the server. The CVSS 3.1 base score is 9.8 (critical).

Written with Claude Haiku 5.5 from the sources below · 2026-11-05

Description from the CNA

Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Core). Supported versions that are affected are 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0 and 15.1.1.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via T3, IIOP to compromise Oracle WebLogic Server. Successful attacks of this vulnerability can result in takeover of Oracle WebLogic Server. 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 0.00522 44th 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 WebLogic Server12.2.1.4.0; 14.1.1.0.0; 14.1.2.0.0; 15.1.1.0.0—No fix listedCNA
  • Oracle WebLogic Server VendorOracle Affected 12.2.1.4.0; 14.1.1.0.0; 14.1.2.0.0; 15.1.1.0.0 Fixed in — No fix listed CNA

CPE configurations NVD · 4

CPEVersionsRoleVendor
cpe:2.3:a:oracle:weblogic_server:12.2.1.4.0:*:*:*:*:*:*:*12.2.1.4.0VulnerableOracle
cpe:2.3:a:oracle:weblogic_server:14.1.1.0.0:*:*:*:*:*:*:*14.1.1.0.0VulnerableOracle
cpe:2.3:a:oracle:weblogic_server:14.1.2.0.0:*:*:*:*:*:*:*14.1.2.0.0VulnerableOracle
cpe:2.3:a:oracle:weblogic_server:15.1.1.0.0:*:*:*:*:*:*:*15.1.1.0.0VulnerableOracle
  • cpe:2.3:a:oracle:weblogic_server:12.2.1.4.0:*:*:*:*:*:*:* Versions 12.2.1.4.0 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:weblogic_server:14.1.1.0.0:*:*:*:*:*:*:* Versions 14.1.1.0.0 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:weblogic_server:14.1.2.0.0:*:*:*:*:*:*:* Versions 14.1.2.0.0 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:weblogic_server:15.1.1.0.0:*:*:*:*:*:*:* Versions 15.1.1.0.0 Vulnerable ·Oracle

Remediation

The sources list no fixed version for Oracle WebLogic Server.

Written with Claude Haiku 5.5 from the sources below · 2026-11-05

Fixed in the same release

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

  • Advisory ·

    Oracle WebLogic Server — oracle.com/security-alerts/cpuoct2026.html

    5 records Highest priority Priority MEDIUM 3 MEDIUM, 2 LOW

    Other records, highest priority first

    • TI-2026-77382 Authentication flaw in Oracle WebLogic Server allows remote takeoverPriority MEDIUM 49
    • TI-2026-77143 Improper authentication in Oracle WebLogic Server CorePriority MEDIUM 48
    • TI-2026-77550 Missing authentication in Oracle WebLogic Server Core componentPriority LOW 38
    Show all 5 records → Advisory →

Timeline

  1. 2026-10-21 Threatist record created from CVE-2026-83399
  2. 2026-10-21 Alias added: GHSA-xphr-m446-69p7
  3. 2026-10-21 Weakness changed · CISA ADP
  4. 2026-10-21 CISA SSVC decision points changed

References

Advisory 1

  • TI-2022-07142 Code injection in Spring Framework KEVCVSS 3.1CRITICAL 9.8
  • TI-2020-11717 Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware… KEVCVSS 3.1CRITICAL 9.8
  • TI-2020-11587 Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware… KEVCVSS 3.1CRITICAL 9.8
  • TI-2020-11493 Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware… KEVCVSS 3.1CRITICAL 9.8
  • TI-2020-02582 Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware… KEVCVSS 3.1CRITICAL 9.8
  • TI-2020-02255 Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware… KEVCVSS 3.1CRITICAL 9.8
See all 361 →

Sources

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