CVE-2015-3221

Exp

OpenStack Neutron before 2014.2.4 (juno) and 2015.1.x before 2015.1.1 (kilo), when using the IPTables firewall driver, allows remote authenticated users to cause a denial of service (L2 agent crash) by adding an address pair that is rejected by the ipset tool.

Published: 2015-08-26 Last update: 2026-05-06 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2015-3221 is rated High Exploit Risk (61.4/100): CVSS Medium severity, with high exploitation likelihood (EPSS 11.34%, 95th percentile). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

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

Public exploit references (Exploit-DB) for CVE-2015-3221

EDB-ID Source Kind Published Link
37360 exploit_db edb 2015-06-24 Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2015-3221

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 14.31% 11.34% -2.97%
2 2026-05-11 12.60% 14.31% +1.71%
3 2026-02-12 — 12.60% —

Full EPSS history (15 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2015-3221

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-2015-3221

GitHub Security Advisory for CVE-2015-3221

GHSA-wf44-4mgj-rwvx · Severity: medium · Ecosystem: pip — OpenStack Neutron Improper Input Validation vulnerability

OS Trackers for CVE-2015-3221

vendor priority summary link
debian not yet assigned CVE-2015-3221 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-2015-3221
redhat medium — https://access.redhat.com/security/cve/CVE-2015-3221
ubuntu low CVE-2015-3221 low priority: Ubuntu including 1 source packages (neutron), 5 status rows across 5 suites (precise, trusty, upstream, utopic, vivid): DNE 2, ignored 1, not-affected 1, released 1. https://ubuntu.com/security/CVE-2015-3221

Affected software / configurations for CVE-2015-3221

Vendor Product Version Raw CPE
openstack neutron >= 2014.2, < 2014.2.4 cpe:2.3:a:openstack:neutron:*:*:*:*:*:*:*:*
openstack neutron >= 2015.1.0, < 2015.1.1 cpe:2.3:a:openstack:neutron:*:*:*:*:*:*:*:*

References for CVE-2015-3221

cvelogic Threat Intelligence