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TI-2026-77466 Aliases CVE-2026-91409GHSA-5r5x-j567-5823

Resource exhaustion in Oracle Java SE Networking component

Priority LOW 18CWE-400Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-400.

Summary

Oracle Java SE 27 in the Networking component is affected. Uncontrolled resource consumption (CWE-400) lets a remote attacker cause a partial denial of service in Java SE. An unauthenticated attacker with network access over multiple protocols can trigger it, though exploitation is difficult. The flaw also applies to Java deployments that run untrusted code in sandboxed applets or Java Web Start applications.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

Vulnerability in Oracle Java SE (component: Networking). The supported version that is affected is Oracle Java SE: 27. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle Java SE. Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of Oracle Java SE. Note: This vulnerability can be exploited by using APIs in the specified Component, e.g., through a web service which supplies data to the APIs. This vulnerability also applies to Java deployments, typically in clients running sandboxed Java Web Start applications or sandboxed Java applets, that load and run untrusted code (e.g., code that comes from the internet) and rely on the Java sandbox for security. CVSS 3.1 Base Score 3.7 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L).

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00379 32nd 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
No
Technical impact
Partial

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 Java SE27—No fix listedCNA
  • Oracle Java SE VendorOracle Affected 27 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for Oracle Java SE. Red Hat rates the issue Low and lists Red Hat Enterprise Linux 6 with no fix planned, and Red Hat Enterprise Linux 7, 8, 9 and 10 and Red Hat build of OpenJDK 11 ELS, 17, 21 and 25 with no fix plan available.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Fixed in the same release

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

  • Advisory ·

    Oracle Java SE — oracle.com/security-alerts/cpuoct2026.html

    51 records Highest priority Priority LOW 51 LOW

    Other records, highest priority first

    • TI-2026-77455 Improper access control in Oracle Java SE and GraalVMPriority LOW 35
    • TI-2026-77105 Improper access control in Oracle Java SE networking componentPriority LOW 35
    • TI-2026-77828 Improper access control in Oracle Java SEPriority LOW 34
    Show all 51 records → Advisory →

Vendor assessments

Red Hat

Red Hat rating: Low. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 10AffectedNo fix yet
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 7AffectedNo fix yet
Red Hat Enterprise Linux 8AffectedNo fix yet
Red Hat Enterprise Linux 9AffectedNo fix yet
Red Hat build of OpenJDK 11 ELSAffectedNo fix yet
Red Hat build of OpenJDK 17AffectedNo fix yet
Red Hat build of OpenJDK 21AffectedNo fix yet
Red Hat build of OpenJDK 25AffectedNo fix yet
Not affected: 4 products
  • Red Hat Enterprise Linux 8
  • Red Hat Hardened Images
  • Red Hat build of OpenJDK 1.8
  • Red Hat build of OpenJDK 17

Timeline

  1. 2026-10-21 Threatist record created from CVE-2026-91409
  2. 2026-10-21 Alias added: GHSA-5r5x-j567-5823
  3. 2026-10-21 Affected versions changed · Red Hat
  4. 2026-10-21 CVSS score added · Red Hat
  5. 2026-10-22 Affected versions changed · Red Hat
  6. 2026-10-23 Affected versions changed · Red Hat
  7. 2026-10-23 Weakness changed · CISA ADP
  8. 2026-10-23 CISA SSVC decision points changed

References

Advisory 1

  • TI-2026-34425 Improper privilege management in Oracle Payments KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-27421 Missing authentication in Oracle PeopleSoft Enterprise PeopleTools KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-17661 Improper access control in Oracle HTTP Server, Oracle Weblogic Server Proxy Plug-in KEVCVSS 3.1CRITICAL 10.0
  • TI-2025-38252 Improper authentication in Oracle Concurrent Processing KEVCVSS 3.1CRITICAL 9.8
  • TI-2025-38151 Missing authentication in Oracle Identity Manager KEVCVSS 3.1CRITICAL 9.8
  • TI-2022-07142 Code injection in Spring Framework KEVCVSS 3.1CRITICAL 9.8
See all 14200 →

Sources

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