CVE-2019-17520

Name: CVE-2019-17520
Creator: NVD / NIST
Published: 2020-02-10T21:51:15.953+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 1.81%

Last modified Jun 17, 2026

CVE-2019-17520 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. The Bluetooth Low Energy implementation on Texas Instruments SDK through 3.30.00.20 for CC2640R2 devices does not properly restrict the SM Public Key packet on reception, allowing attackers in radio range to cause a denial of service (crash) via crafted packets.. EPSS estimates a 1.81% chance of exploitation in the next 30 days.

Description

The Bluetooth Low Energy implementation on Texas Instruments SDK through 3.30.00.20 for CC2640R2 devices does not properly restrict the SM Public Key packet on reception, allowing attackers in radio range to cause a denial of service (crash) via crafted packets.

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

1.81%

75.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-120

Affected Software

Vendor	Product	Versions
Ti	Cc2640r2 Software Development Kit	<= 3.30.00.20

References

http://www.ti.com/tool/LAUNCHXL-CC2640R2Product, Vendor Advisory
https://asset-group.github.io/disclosures/sweyntooth/Third Party Advisory
https://www.youtube.com/watch?v=Iw8sIBLWE_wExploit, Third Party Advisory
http://www.ti.com/tool/LAUNCHXL-CC2640R2Product, Vendor Advisory
https://asset-group.github.io/disclosures/sweyntooth/Third Party Advisory
https://www.youtube.com/watch?v=Iw8sIBLWE_wExploit, Third Party Advisory

Timeline

Published: Feb 10, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-17520?

How severe is CVE-2019-17520?

CVE-2019-17520 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 1.81% probability of exploitation in the next 30 days.

How do I fix CVE-2019-17520?

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-2019-17520?

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

Scan your code now

Source: NVD / NIST