CVE-2022-46400

Name: CVE-2022-46400
Creator: NVD / NIST
Published: 2022-12-19T23:15:10.96+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.62%

Last modified Jun 17, 2026

CVE-2022-46400 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. The Microchip RN4870 module firmware 1.43 (and the Microchip PIC LightBlue Explorer Demo 4.2 DT100112) allows attackers to bypass passkey entry in legacy pairing.. EPSS estimates a 0.62% chance of exploitation in the next 30 days.

Description

The Microchip RN4870 module firmware 1.43 (and the Microchip PIC LightBlue Explorer Demo 4.2 DT100112) allows attackers to bypass passkey entry in legacy pairing.

Metrics

CVSS 3.1

5.4/10

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

EPSS Probability

0.62%

45.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-287

Affected Software

Vendor	Product	Versions
Microchip	Bm78 Firmware	1.43
Microchip	Bm83 Firmware	1.43
Microchip	Rn4870 Firmware	1.43
Microchip	Rn4871 Firmware	1.43
Microchip	Bm70 Firmware	1.43
Microchip	Bm71 Firmware	1.43
Microchip	Pic Lightblue Explorer Demo Firmware	4.2_dt100112
Microchip	Is1870 Firmware	1.43
Microchip	Is1871 Firmware	1.43

References

https://microchip.comProduct
https://www.computer.org/csdl/proceedings-article/sp/2023/933600a521/1He7Yja1AYMExploit, Technical Description, Third Party Advisory
https://www.computer.org/csdl/proceedings/sp/2023/1He7WWuJExGThird Party Advisory
https://www.microchip.com/en-us/products/wireless-connectivity/software-vulnerability-response/deviating-behaviors-in-bluetooth-leVendor Advisory
https://microchip.comProduct
https://www.computer.org/csdl/proceedings-article/sp/2023/933600a521/1He7Yja1AYMExploit, Technical Description, Third Party Advisory
https://www.computer.org/csdl/proceedings/sp/2023/1He7WWuJExGThird Party Advisory
https://www.microchip.com/en-us/products/wireless-connectivity/software-vulnerability-response/deviating-behaviors-in-bluetooth-leVendor Advisory

Timeline

Published: Dec 19, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-46400?

The Microchip RN4870 module firmware 1.43 (and the Microchip PIC LightBlue Explorer Demo 4.2 DT100112) allows attackers to bypass passkey entry in legacy pairing.

How severe is CVE-2022-46400?

CVE-2022-46400 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.62% probability of exploitation in the next 30 days.

How do I fix CVE-2022-46400?

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-2022-46400?

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

Scan your code now

Source: NVD / NIST