How severe is CVE-2014-7821?

CVE-2014-7821 has a CVSS 2.0 base score of 4.0, rated medium severity.

Is CVE-2014-7821 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2014-7821?

CVE-2014-7821 primarily affects Redhat Openstack. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2014-7821?

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

When was CVE-2014-7821 published?

CVE-2014-7821 was published on 2014-11-24 and last updated on 2026-06-17.

CVE-2014-7821

CVE-2014-7821 is a medium-severity vulnerability in Redhat Openstack with a CVSS 2.0 base score of 4.0. 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-20.

Key facts

Severity: Medium (CVSS 2.0 base score 4.0)
EPSS exploit prediction: 4% (89th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Redhat Openstack
Published: 2014-11-24
Last modified: 2026-06-17

Description

OpenStack Neutron before 2014.1.4 and 2014.2.x before 2014.2.1 allows remote authenticated users to cause a denial of service (crash) via a crafted dns_nameservers value in the DNS configuration.

Frequently asked questions

What is CVE-2014-7821?: OpenStack Neutron before 2014.1.4 and 2014.2.x before 2014.2.1 allows remote authenticated users to cause a denial of service (crash) via a crafted dns_nameservers value in the DNS configuration.
How severe is CVE-2014-7821?: CVE-2014-7821 has a CVSS 2.0 base score of 4.0, rated medium severity.
Is CVE-2014-7821 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2014-7821?: CVE-2014-7821 primarily affects Redhat Openstack. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2014-7821?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2014-7821 published?: CVE-2014-7821 was published on 2014-11-24 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:a:openstack:neutron:*:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:20:*:*:*:*:*:*:*
cpe:2.3:a:redhat:openstack:4.0:*:*:*:*:*:*:*

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