{"id":"CVE-2016-5362","aliases":["GHSA-qpwc-p365-pqrr","PYSEC-2026-854"],"title":"OpenStack Neutron allows remote attackers to bypass an intended DHCP-spoofing protection mechanism","summary":"OpenStack Neutron allows remote attackers to bypass an intended DHCP-spoofing protection mechanism","severity":"high","cvss":8.2,"cvssVector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H","vendor":"neutron","product":"neutron","ecosystem":"pip","affected":["neutron < 7.0.5","neutron >= 8.0.0, < 8.1.1"],"patched":["neutron 7.0.5","neutron 8.1.1"],"published":"2022-05-14","updated":"2026-07-07","source":"OSV","sourceUrl":"https://osv.dev/vulnerability/GHSA-qpwc-p365-pqrr","references":[{"url":"https://nvd.nist.gov/vuln/detail/CVE-2016-5362"},{"url":"https://access.redhat.com/errata/RHSA-2016:1473"},{"url":"https://access.redhat.com/errata/RHSA-2016:1474"},{"url":"https://bugs.launchpad.net/neutron/+bug/1558658"},{"url":"https://github.com/openstack/neutron"},{"url":"https://review.openstack.org/#/c/300202"},{"url":"https://review.openstack.org/#/c/303563"},{"url":"https://review.openstack.org/#/c/303572"},{"url":"https://security.openstack.org/ossa/OSSA-2016-009.html"},{"url":"http://www.openwall.com/lists/oss-security/2016/06/10/5"},{"url":"http://www.openwall.com/lists/oss-security/2016/06/10/6"}],"tags":["osv","pip"],"epss":0.0367,"epssPercentile":0.8917,"ingestedAt":"2026-07-08T18:25:52.464Z","slug":"CVE-2016-5362","body":"## Overview\n\nThe 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.\n\n## Affected packages\n\n- `neutron < 7.0.5`\n- `neutron >= 8.0.0, < 8.1.1`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `neutron 7.0.5`\n- `neutron 8.1.1`","depth":"twilight","depthScore":46,"depthScoreParts":{"impact":45.1,"likelihood":0.7,"exploitation":0,"ransomware":0},"changes":[]}