CVE-2016-5362

The IPTables firewall in OpenStack Neutron before 7.0.4 and 8.0.0 through 8.1.0 allows remote attackers to bypass an intended DHCP-spoofing protection mechanism and consequently cause a denial of service or intercept network traffic via a crafted DHCP discovery message.

Published: 2016-06-17 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2016-5362 is rated Moderate Risk (60.3/100): CVSS High severity, with medium exploitation likelihood (EPSS 3.35%). 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-2016-5362

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 6.31% 3.35% -2.96%
2 2025-08-25 1.45% 6.31% +4.86%
3 2025-03-30 — 1.45% —

Full EPSS history (15 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2016-5362

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.2 3.0 HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 4.2 [email protected]
6.4 2.0 MEDIUM
AV:N/AC:L/Au:N/C:P/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:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 4.9 [email protected]

Weakness enumeration for CVE-2016-5362

GitHub Security Advisory for CVE-2016-5362

GHSA-qpwc-p365-pqrr · Severity: high · Ecosystem: pip — OpenStack Neutron allows remote attackers to bypass an intended DHCP-spoofing protection mechanism

OS Trackers for CVE-2016-5362

vendor priority summary link
debian not yet assigned CVE-2016-5362 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-2016-5362
redhat low — https://access.redhat.com/security/cve/CVE-2016-5362
suse medium CVE-2016-5362 severity moderate: SUSE including 80 source package names (openstack-ceilometer-5.0.4~a0~dev6-6.1, openstack-ceilometer-agent-central-5.0.4~a0~dev6-6.1, …), 80 product×package rows across 1 product lines (SUSE OpenStack Cloud 6): Fixed 80. https://www.suse.com/security/cve/CVE-2016-5362/
ubuntu low CVE-2016-5362 low priority: Ubuntu including 1 source packages (neutron), 11 status rows across 11 suites (artful, bionic, cosmic, disco, precise, trusty, upstream, wily, xenial, yakkety, zesty): not-affected 6, DNE 2, ignored 2, needs-triage 1. https://ubuntu.com/security/CVE-2016-5362

Affected software / configurations for CVE-2016-5362

Vendor Product Version Raw CPE
openstack neutron >= 7.0.0, < 7.0.4 cpe:2.3:a:openstack:neutron:*:*:*:*:*:*:*:*
openstack neutron >= 8.0.0, <= 8.1.0 cpe:2.3:a:openstack:neutron:*:*:*:*:*:*:*:*

References for CVE-2016-5362

cvelogic Threat Intelligence