CVE-2023-3966

Name: CVE-2023-3966
Creator: NVD / NIST
Published: 2024-02-22T13:15:07.77+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.03%

Last modified Jun 17, 2026

CVE-2023-3966 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 1.03% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

1.03%

59.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-248

Affected Software

Vendor	Product	Versions
Openvswitch	Openvswitch	< 3.1.0
Fedoraproject	Fedora	39
Fedoraproject	Fedora	40

References

https://access.redhat.com/security/cve/CVE-2023-3966Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2178363Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LFZADABUDOFI2KZIRQBYFZCIKH55RGY3/Mailing List
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VYYUBF6OW2JG7VOFEOROHXGSJCTES3QO/Mailing List
https://access.redhat.com/security/cve/CVE-2023-3966Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2178363Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LFZADABUDOFI2KZIRQBYFZCIKH55RGY3/Mailing List
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VYYUBF6OW2JG7VOFEOROHXGSJCTES3QO/Mailing List

Timeline

Published: Feb 22, 2024
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2023-3966?

How severe is CVE-2023-3966?

CVE-2023-3966 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.03% probability of exploitation in the next 30 days.

How do I fix CVE-2023-3966?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-3966?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST