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.

Published: 2014-11-24 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2014-7821 is rated Moderate Risk (48.9/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 3.94%). EPSS rose +1.76% over the last day, indicating growing attacker interest. Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2014-7821

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 2.17% 3.94% +1.76%
2 2026-05-24 1.86% 2.17% +0.31%
3 2026-02-20 — 1.86% —

Full EPSS history (20 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2014-7821

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.0 2.0 MEDIUM
AV:N/AC:L/Au:S/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.0 2.9 [email protected]

Weakness enumeration for CVE-2014-7821

OS Trackers for CVE-2014-7821

vendor priority summary link
debian not yet assigned CVE-2014-7821 not yet assigned priority: Debian including 1 source packages (neutron), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2014-7821
redhat medium — https://access.redhat.com/security/cve/CVE-2014-7821
ubuntu low CVE-2014-7821 low priority: Ubuntu including 1 source packages (neutron), 6 status rows across 6 suites (lucid, precise, trusty, upstream, utopic, vivid): DNE 2, not-affected 2, needs-triage 1, released 1. https://ubuntu.com/security/CVE-2014-7821

Affected software / configurations for CVE-2014-7821

Vendor Product Version Raw CPE
openstack neutron >= 2012.2.1, < 2014.1.4 cpe:2.3:a:openstack:neutron:*:*:*:*:*:*:*:*
openstack neutron >= 2014.2, < 2014.2.1 cpe:2.3:a:openstack:neutron:*:*:*:*:*:*:*:*
fedoraproject fedora 20 cpe:2.3:o:fedoraproject:fedora:20:*:*:*:*:*:*:*
redhat openstack 4.0 cpe:2.3:a:redhat:openstack:4.0:*:*:*:*:*:*:*

References for CVE-2014-7821

cvelogic Threat Intelligence