CVE-2020-15531

Name: CVE-2020-15531
Creator: NVD / NIST
Published: 2020-08-20T01:17:12.663+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 3.16%

Last modified Jun 17, 2026

CVE-2020-15531 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Silicon Labs Bluetooth Low Energy SDK before 2.13.3 has a buffer overflow via packet data. This is an over-the-air remote code execution vulnerability in Bluetooth LE in EFR32 SoCs and associated modules running Bluetooth SDK, supporting Central or Observer roles.. EPSS estimates a 3.16% chance of exploitation in the next 30 days.

Description

Silicon Labs Bluetooth Low Energy SDK before 2.13.3 has a buffer overflow via packet data. This is an over-the-air remote code execution vulnerability in Bluetooth LE in EFR32 SoCs and associated modules running Bluetooth SDK, supporting Central or Observer roles.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

3.16%

86.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-120

Affected Software

Vendor	Product	Versions
Silabs	Bluetooth Low Energy Software Development Kit	< 2.13.3.0

References

https://github.com/darkmentorllc/jackbnimble/blob/master/host/pocs/silabs_efr32_extadv_rce.pyExploit, Third Party Advisory
https://github.com/darkmentorllc/publications/tree/master/2020/TI_SILABS_BLE_RCEsThird Party Advisory
https://www.blackhat.com/us-20/briefings/schedule/#finding-new-bluetooth-low-energy-exploits-via-reverse-engineering-multiple-vendors-firmwares-19655Third Party Advisory
https://www.youtube.com/watch?v=saoTr1NwdzMExploit, Third Party Advisory
https://github.com/darkmentorllc/jackbnimble/blob/master/host/pocs/silabs_efr32_extadv_rce.pyExploit, Third Party Advisory
https://github.com/darkmentorllc/publications/tree/master/2020/TI_SILABS_BLE_RCEsThird Party Advisory
https://www.blackhat.com/us-20/briefings/schedule/#finding-new-bluetooth-low-energy-exploits-via-reverse-engineering-multiple-vendors-firmwares-19655Third Party Advisory
https://www.youtube.com/watch?v=saoTr1NwdzMExploit, Third Party Advisory

Timeline

Published: Aug 20, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-15531?

How severe is CVE-2020-15531?

CVE-2020-15531 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 3.16% probability of exploitation in the next 30 days.

How do I fix CVE-2020-15531?

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-2020-15531?

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

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Source: NVD / NIST