CVE-2023-6640

Name: CVE-2023-6640
Creator: NVD / NIST
Published: 2024-02-21T20:15:46.497+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.27%

Last modified Jun 17, 2026

CVE-2023-6640 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. Malformed S2 Nonce Get Command Class packets can be sent to crash PC Controller v5.54.0 and earlier.. EPSS estimates a 0.27% chance of exploitation in the next 30 days.

Description

Malformed S2 Nonce Get Command Class packets can be sent to crash PC Controller v5.54.0 and earlier.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

0.27%

18.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-248

Affected Software

Vendor	Product	Versions
Silabs	Z-Wave Pc-Based Controller	<= 5.54

References

https://community.silabs.com/068Vm000001HdNmPermissions Required
https://community.silabs.com/068Vm000001HdNmPermissions Required

Timeline

Published: Feb 21, 2024
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2023-6640?

Malformed S2 Nonce Get Command Class packets can be sent to crash PC Controller v5.54.0 and earlier.

How severe is CVE-2023-6640?

CVE-2023-6640 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.27% probability of exploitation in the next 30 days.

How do I fix CVE-2023-6640?

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-2023-6640?

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

Scan your code now

Source: NVD / NIST