An issue was discovered in OpenStack Neutron 11.x before 11.0.7, 12.x before 12.0.6, and 13.x before 13.0.3. By creating two security groups with separate/overlapping port ranges, an authenticated user may prevent Neutron from being able to configure networks on any compute nodes where those security groups are present, because of an Open vSwitch (OVS) firewall KeyError. All Neutron deployments utilizing neutron-openvswitch-agent are affected.
CVE-2019-10876
This medium-severity CVE scores 6.5 under NVD CVSS v3. EPSS exploit probability: 1.8%, top 24% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- Lower severity and no public exploit yet
A fix is available — apply it.
- CVSS v3
- 6.5
- EG Score
- 6.5(medium)
- EG Risk
- 34(Track)EG Risk 34/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity65% × 45%Exploitation2% × 40%Automatability30% × 15%Action: Routine — remediate on your standard cadence. - EPSS
- 75.6%
- KEV
- Not listed
Published
April 5, 2019
Last Modified
November 21, 2024
References (12)
- cve@mitrehttp://www.openwall.com/lists/oss-security/2019/04/09/2
- cve@mitrehttps://access.redhat.com/errata/RHSA-2019:0879
- cve@mitrehttps://access.redhat.com/errata/RHSA-2019:0935
- cve@mitrehttps://bugs.launchpad.net/ossa/+bug/1813007
- cve@mitrehttps://review.openstack.org/#/q/topic:bug/1813007
- cve@mitrehttps://security.openstack.org/ossa/OSSA-2019-002.html
- af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2019/04/09/2
- af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2019:0879
- af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2019:0935
- af854a3a-2127-422b-91ae-364da2661108https://bugs.launchpad.net/ossa/+bug/1813007
- af854a3a-2127-422b-91ae-364da2661108https://review.openstack.org/#/q/topic:bug/1813007
- af854a3a-2127-422b-91ae-364da2661108https://security.openstack.org/ossa/OSSA-2019-002.html
Vendor Advisories for CVE-2019-10876(2)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Patch Availability(2)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| redhat | openstack-neutron-1:12.0.5-11.el7ost | 2019-04-30 | redhat |
| redhat | openstack-neutron-1:13.0.3-0.20190313155649.00b63be.el7ost | 2019-04-30 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Affected Packages
(1 across 1 ecosystem)
PyPI(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| neutron | 0.0 ... 13.0.2 (17 versions) | 13.0.3 | — |
Data Freshness Timeline
(refreshed 14× in last 7d / 46× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-23 01:38 UTCEG score recompute
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- 2026-07-22 14:05 UTCEPSS rescore
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Frequently asked(5)
What is CVE-2019-10876?
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Is CVE-2019-10876 actively exploited?
What is the CVSS score of CVE-2019-10876?
How do I remediate CVE-2019-10876?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2019-10876
Is Your Infrastructure Affected by CVE-2019-10876?
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