Is CVE-2023-3966 in the CISA KEV catalog?

No. CVE-2023-3966 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-3966?

CVE-2023-3966 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2023-3966?

CVE-2023-3966 has an EPSS score of 1.03% (60th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-3966?

Upgrade openvswitch on debian 11 to 2.15.0+ds1-2+deb11u5 or later. Fixes are available for 40 affected products.

CVE & CISA-KEV Catalog

CVE-2023-3966

HIGH

7.5

CVSS v3

NVD

Description

A flaw was found in Open vSwitch where multiple versions are vulnerable to crafted Geneve packets, which may result in a denial of service and invalid memory accesses. Triggering this issue requires that hardware offloading via the netlink path is enabled.

CWE-248

How to fix

Remediation Available

openvswitchDebian

Fixed in:2.15.0+ds1-2+deb11u5CVE-2023-3966

Fixed in:3.1.0-2+deb12u1CVE-2023-3966

Fixed in:3.3.0-1CVE-2023-3966

network-scripts-openvswitch2.17Red Hat / RHEL

Fixed in:0:2.17.0-148.el8fdpRHSA-2024:1234

network-scripts-openvswitch2.17Rocky

Fixed in:0:2.17.0-148.el8fdpRHSA-2024:1234

network-scripts-openvswitch3.1Rocky

Fixed in:0:3.1.0-96.el8fdpRHSA-2024:1235

network-scripts-openvswitch3.1Red Hat / RHEL

Fixed in:0:3.1.0-96.el8fdpRHSA-2024:1235

openvswitch2.17Red Hat / RHEL

Fixed in:0:2.17.0-148.el8fdpRHSA-2024:1234

openvswitch2.17Rocky

Fixed in:0:2.17.0-148.el8fdpRHSA-2024:1234

openvswitch2.17-debuginfoRed Hat / RHEL

Fixed in:0:2.17.0-148.el8fdpRHSA-2024:1234

openvswitch2.17-debuginfoRocky

Fixed in:0:2.17.0-148.el8fdpRHSA-2024:1234

openvswitch2.17-debugsourceRocky

Fixed in:0:2.17.0-148.el8fdpRHSA-2024:1234

openvswitch2.17-debugsourceRed Hat / RHEL

Fixed in:0:2.17.0-148.el8fdpRHSA-2024:1234

openvswitch2.17-develRed Hat / RHEL

Fixed in:0:2.17.0-148.el8fdpRHSA-2024:1234

openvswitch2.17-develRocky

Fixed in:0:2.17.0-148.el8fdpRHSA-2024:1234

openvswitch2.17-ipsecRed Hat / RHEL

Fixed in:0:2.17.0-148.el8fdpRHSA-2024:1234

openvswitch2.17-ipsecRocky

Fixed in:0:2.17.0-148.el8fdpRHSA-2024:1234

openvswitch2.17-testRocky

Fixed in:0:2.17.0-148.el8fdpRHSA-2024:1234

openvswitch2.17-testRed Hat / RHEL

Fixed in:0:2.17.0-148.el8fdpRHSA-2024:1234

openvswitch3.1Rocky

Fixed in:0:3.1.0-96.el8fdpRHSA-2024:1235

Fixed in:0:3.1.0-88.el9fdpRHSA-2024:1227

openvswitch3.1Red Hat / RHEL

Fixed in:0:3.1.0-96.el8fdpRHSA-2024:1235

Fixed in:0:3.1.0-88.el9fdpRHSA-2024:1227

openvswitch3.1-debuginfoRocky

Fixed in:0:3.1.0-96.el8fdpRHSA-2024:1235

Fixed in:0:3.1.0-88.el9fdpRHSA-2024:1227

openvswitch3.1-debuginfoRed Hat / RHEL

Fixed in:0:3.1.0-96.el8fdpRHSA-2024:1235

Fixed in:0:3.1.0-88.el9fdpRHSA-2024:1227

openvswitch3.1-debugsourceRocky

Fixed in:0:3.1.0-96.el8fdpRHSA-2024:1235

Fixed in:0:3.1.0-88.el9fdpRHSA-2024:1227

openvswitch3.1-debugsourceRed Hat / RHEL

Fixed in:0:3.1.0-96.el8fdpRHSA-2024:1235

Fixed in:0:3.1.0-88.el9fdpRHSA-2024:1227

openvswitch3.1-develRocky

Fixed in:0:3.1.0-96.el8fdpRHSA-2024:1235

Fixed in:0:3.1.0-88.el9fdpRHSA-2024:1227

openvswitch3.1-develRed Hat / RHEL

Fixed in:0:3.1.0-96.el8fdpRHSA-2024:1235

Fixed in:0:3.1.0-88.el9fdpRHSA-2024:1227

openvswitch3.1-ipsecRed Hat / RHEL

Fixed in:0:3.1.0-96.el8fdpRHSA-2024:1235

Fixed in:0:3.1.0-88.el9fdpRHSA-2024:1227

openvswitch3.1-ipsecRocky

Fixed in:0:3.1.0-96.el8fdpRHSA-2024:1235

Fixed in:0:3.1.0-88.el9fdpRHSA-2024:1227

openvswitch3.1-testRocky

Fixed in:0:3.1.0-96.el8fdpRHSA-2024:1235

Fixed in:0:3.1.0-88.el9fdpRHSA-2024:1227

openvswitch3.1-testRed Hat / RHEL

Fixed in:0:3.1.0-96.el8fdpRHSA-2024:1235

Fixed in:0:3.1.0-88.el9fdpRHSA-2024:1227

python3-openvswitch2.17Red Hat / RHEL

Fixed in:0:2.17.0-148.el8fdpRHSA-2024:1234

python3-openvswitch2.17Rocky

Fixed in:0:2.17.0-148.el8fdpRHSA-2024:1234

python3-openvswitch2.17-debuginfoRed Hat / RHEL

Fixed in:0:2.17.0-148.el8fdpRHSA-2024:1234

python3-openvswitch2.17-debuginfoRocky

Fixed in:0:2.17.0-148.el8fdpRHSA-2024:1234

python3-openvswitch3.1Rocky

Fixed in:0:3.1.0-96.el8fdpRHSA-2024:1235

Fixed in:0:3.1.0-88.el9fdpRHSA-2024:1227

python3-openvswitch3.1Red Hat / RHEL

Fixed in:0:3.1.0-96.el8fdpRHSA-2024:1235

Fixed in:0:3.1.0-88.el9fdpRHSA-2024:1227

python3-openvswitch3.1-debuginfoRocky

Fixed in:0:3.1.0-96.el8fdpRHSA-2024:1235

Fixed in:0:3.1.0-88.el9fdpRHSA-2024:1227

python3-openvswitch3.1-debuginfoRed Hat / RHEL

Fixed in:0:3.1.0-96.el8fdpRHSA-2024:1235

Fixed in:0:3.1.0-88.el9fdpRHSA-2024:1227

openvswitchUbuntu

Fixed in:2.13.8-0ubuntu1.4USN-6690-1

Fixed in:2.17.9-0ubuntu0.22.04.1USN-6690-1

Fixed in:3.2.2-0ubuntu0.23.10.1USN-6690-1

openvswitch-commonUbuntu

Fixed in:2.13.8-0ubuntu1.4USN-6690-1

Fixed in:2.17.9-0ubuntu0.22.04.1USN-6690-1

Fixed in:3.2.2-0ubuntu0.23.10.1USN-6690-1

python3-openvswitchUbuntu

Fixed in:2.13.8-0ubuntu1.4USN-6690-1

Fixed in:2.17.9-0ubuntu0.22.04.1USN-6690-1

Fixed in:3.2.2-0ubuntu0.23.10.1USN-6690-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

1.03%probability of exploitation in 30 days

60thpercentile

Moderate risk: more likely to be exploited than 60% of all known CVEs.

References

Third-Party Advisory2

Mailing List2

Embed a live status badge for CVE-2023-3966

Markdown

[![CVE-2023-3966](https://tridentstack.com/cve/badge/CVE-2023-3966.svg)](https://tridentstack.com/cve/CVE-2023-3966)

HTML

<a href="https://tridentstack.com/cve/CVE-2023-3966"><img src="https://tridentstack.com/cve/badge/CVE-2023-3966.svg" alt="CVE-2023-3966"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-05-16.