How severe is CVE-2020-14340?

CVE-2020-14340 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2020-14340 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-14340?

CVE-2020-14340 primarily affects Redhat Xnio. In total, 20 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-14340?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-14340 published?

CVE-2020-14340 was published on 2021-06-02 and last updated on 2026-06-17.

CVE-2020-14340

CVE-2020-14340 is a medium-severity vulnerability in Redhat Xnio with a CVSS 3.x base score of 5.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-400.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
CVSS v2: 4.3
EPSS exploit prediction: 2% (81st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-400
Affected product: Redhat Xnio
Published: 2021-06-02
Last modified: 2026-06-17

Description

A vulnerability was discovered in XNIO where file descriptor leak caused by growing amounts of NIO Selector file handles between garbage collection cycles. It may allow the attacker to cause a denial of service. It affects XNIO versions 3.6.0.Beta1 through 3.8.1.Final.

Frequently asked questions

What is CVE-2020-14340?: A vulnerability was discovered in XNIO where file descriptor leak caused by growing amounts of NIO Selector file handles between garbage collection cycles. It may allow the attacker to cause a denial of service. It affects XNIO versions 3.6.0.Beta1 through 3.8.1.Final.
How severe is CVE-2020-14340?: CVE-2020-14340 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2020-14340 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-14340?: CVE-2020-14340 primarily affects Redhat Xnio. In total, 20 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-14340?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-14340 published?: CVE-2020-14340 was published on 2021-06-02 and last updated on 2026-06-17.

References

Affected products (20)

cpe:2.3:a:redhat:xnio:*:*:*:*:*:*:*:*
cpe:2.3:a:redhat:xnio:3.6.0:beta1:*:*:*:*:*:*
cpe:2.3:a:redhat:xnio:3.6.0:beta2:*:*:*:*:*:*
cpe:2.3:a:redhat:jboss_brms:5:*:*:*:*:*:*:*
cpe:2.3:a:redhat:jboss_brms:6:*:*:*:*:*:*:*
cpe:2.3:a:redhat:jboss_data_grid:6.0.0:*:*:*:*:*:*:*
cpe:2.3:a:redhat:jboss_data_grid:7.0.0:*:*:*:*:*:*:*
cpe:2.3:a:redhat:jboss_data_virtualization:6.0.0:-:*:*:*:*:*:*
cpe:2.3:a:redhat:jboss_enterprise_application_platform:5.0.0:*:*:*:*:*:*:*
cpe:2.3:a:redhat:jboss_enterprise_application_platform:6.0.0:*:*:*:*:*:*:*
cpe:2.3:a:redhat:jboss_fuse:6.0.0:*:*:*:*:*:*:*
cpe:2.3:a:redhat:jboss_fuse:7.0.0:*:*:*:*:*:*:*
cpe:2.3:a:redhat:jboss_operations_network:3.0:*:*:*:*:*:*:*
cpe:2.3:a:redhat:jboss_soa_platform:5:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_cloud_native_core_console:1.9.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_cloud_native_core_network_repository_function:1.14.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_cloud_native_core_policy:1.14.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_cloud_native_core_security_edge_protection_proxy:1.15.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_cloud_native_core_service_communication_proxy:1.14.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_cloud_native_core_unified_data_repository:1.14.0:*:*:*:*:*:*:*

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