Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2022-46403

The Microchip RN4870 module firmware 1.43 (and the Microchip PIC LightBlue Explorer Demo 4.2 DT100112) mishandles reject messages.

Security Impact Summary

This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 8.6, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts integrity (unauthorized modifications), for affected systems. Impacting 18 products from microchip, from microchip, from microchip and 15 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2022, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.

Published

2022-12-19T23:15:11.147

Last Modified

2025-04-17T15:15:52.123

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 8.6 (HIGH)

Weaknesses

Type: Primary
NVD-CWE-noinfo
Type: Secondary
CWE-755

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	microchip	bm78_firmware	1.43	Yes
Hardware	microchip	bm78	-	No
Operating System	microchip	bm83_firmware	1.43	Yes
Hardware	microchip	bm83	-	No
Operating System	microchip	rn4870_firmware	1.43	Yes
Hardware	microchip	rn4870	-	No
Operating System	microchip	rn4871_firmware	1.43	Yes
Hardware	microchip	rn4871	-	No
Operating System	microchip	bm70_firmware	1.43	Yes
Hardware	microchip	bm70	-	No
Operating System	microchip	bm71_firmware	1.43	Yes
Hardware	microchip	bm71	-	No
Operating System	microchip	pic_lightblue_explorer_demo_firmware	4.2_dt100112	Yes
Hardware	microchip	pic_lightblue_explorer_demo	-	No
Operating System	microchip	is1871_firmware	1.43	Yes
Hardware	microchip	is1871	-	No
Operating System	microchip	is1870_firmware	1.43	Yes
Hardware	microchip	is1870	-	No

References

https://microchip.com Product ([email protected])
https://www.computer.org/csdl/proceedings-article/sp/2023/933600a521/1He7Yja1AYM Exploit, Technical Description, Third Party Advisory ([email protected])
https://www.computer.org/csdl/proceedings/sp/2023/1He7WWuJExG Third Party Advisory ([email protected])
https://www.microchip.com/en-us/products/wireless-connectivity/software-vulnerability-response/deviating-behaviors-in-bluetooth-le Vendor Advisory ([email protected])
https://microchip.com Product (af854a3a-2127-422b-91ae-364da2661108)
https://www.computer.org/csdl/proceedings-article/sp/2023/933600a521/1He7Yja1AYM Exploit, Technical Description, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.computer.org/csdl/proceedings/sp/2023/1He7WWuJExG Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.microchip.com/en-us/products/wireless-connectivity/software-vulnerability-response/deviating-behaviors-in-bluetooth-le Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For microchip's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.