CVE-2019-16336

Name: CVE-2019-16336
Creator: NVD / NIST
Published: 2020-02-12T18:15:10.393+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 1.48%

Last modified Jun 17, 2026

CVE-2019-16336 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. The Bluetooth Low Energy implementation in Cypress PSoC 4 BLE component 3.61 and earlier processes data channel frames with a payload length larger than the configured link layer maximum RX payload size, which allows attackers (in radio range) to cause a denial of service (crash) via a crafted BLE Link Layer frame.. EPSS estimates a 1.48% chance of exploitation in the next 30 days.

Description

The Bluetooth Low Energy implementation in Cypress PSoC 4 BLE component 3.61 and earlier processes data channel frames with a payload length larger than the configured link layer maximum RX payload size, which allows attackers (in radio range) to cause a denial of service (crash) via a crafted BLE Link Layer frame.

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

1.48%

70.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-120

Affected Software

Vendor	Product	Versions
Cypress	Cyble-416045	<= 2.10
Cypress	Cybl11573	<= 3.61

References

https://asset-group.github.io/disclosures/sweyntooth/Exploit, Third Party Advisory
https://community.cypress.com/thread/48573Vendor Advisory
https://community.cypress.com/thread/53680Vendor Advisory
https://www.youtube.com/watch?v=Iw8sIBLWE_wExploit, Third Party Advisory
https://asset-group.github.io/disclosures/sweyntooth/Exploit, Third Party Advisory
https://community.cypress.com/thread/48573Vendor Advisory
https://community.cypress.com/thread/53680Vendor Advisory
https://www.youtube.com/watch?v=Iw8sIBLWE_wExploit, Third Party Advisory

Timeline

Published: Feb 12, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-16336?

How severe is CVE-2019-16336?

CVE-2019-16336 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 1.48% probability of exploitation in the next 30 days.

How do I fix CVE-2019-16336?

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-2019-16336?

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

Scan your code now

Source: NVD / NIST