CVE-2022-46403 : The Microchip RN4870 module firmware 1.43 (and the Microchip PIC LightBlue Explo

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

Published 2022-12-19 23:15:11

Updated 2025-04-17 15:15:52

Source MITRE

View at NVD, CVE.org

Products affected by CVE-2022-46403

Microchip » Bm78 Firmware » Version: 1.43
cpe:2.3:o:microchip:bm78_firmware:1.43:*:*:*:*:*:*:*
Matching versions
When used together with: Microchip » Bm78 » Version: N/A
Microchip » Bm83 Firmware » Version: 1.43
cpe:2.3:o:microchip:bm83_firmware:1.43:*:*:*:*:*:*:*
Matching versions
When used together with: Microchip » Bm83 » Version: N/A
Microchip » Rn4870 Firmware » Version: 1.43
cpe:2.3:o:microchip:rn4870_firmware:1.43:*:*:*:*:*:*:*
Matching versions
When used together with: Microchip » Rn4870 » Version: N/A
Microchip » Rn4871 Firmware » Version: 1.43
cpe:2.3:o:microchip:rn4871_firmware:1.43:*:*:*:*:*:*:*
Matching versions
When used together with: Microchip » Rn4871 » Version: N/A
Microchip » Bm70 Firmware » Version: 1.43
cpe:2.3:o:microchip:bm70_firmware:1.43:*:*:*:*:*:*:*
Matching versions
When used together with: Microchip » Bm70 » Version: N/A
Microchip » Bm71 Firmware » Version: 1.43
cpe:2.3:o:microchip:bm71_firmware:1.43:*:*:*:*:*:*:*
Matching versions
When used together with: Microchip » Bm71 » Version: N/A
Microchip » Pic Lightblue Explorer Demo Firmware » Version: 4.2 Dt100112
cpe:2.3:o:microchip:pic_lightblue_explorer_demo_firmware:4.2_dt100112:*:*:*:*:*:*:*
Matching versions
When used together with: Microchip » Pic Lightblue Explorer Demo » Version: N/A
Microchip » Is1871 Firmware » Version: 1.43
cpe:2.3:o:microchip:is1871_firmware:1.43:*:*:*:*:*:*:*
Matching versions
When used together with: Microchip » Is1871 » Version: N/A
Microchip » Is1870 Firmware » Version: 1.43
cpe:2.3:o:microchip:is1870_firmware:1.43:*:*:*:*:*:*:*
Matching versions
When used together with: Microchip » Is1870 » Version: N/A

Exploit prediction scoring system (EPSS) score for CVE-2022-46403

EPSS FAQ

0.17%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 34 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2022-46403

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source	First Seen
8.6	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N	3.9	4.0	134c704f-9b21-4f2e-91b3-4a467353bcc0	2025-04-17
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Changed Confidentiality: None Integrity: High Availability: None
8.6	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N	3.9	4.0	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Changed Confidentiality: None Integrity: High Availability: None

CWE ids for CVE-2022-46403

CWE-755 Improper Handling of Exceptional Conditions

The product does not handle or incorrectly handles an exceptional condition.

Assigned by: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

References for CVE-2022-46403

https://www.microchip.com/en-us/products/wireless-connectivity/software-vulnerability-response/deviating-behaviors-in-bluetooth-le

Deviating Behaviors in Different Bluetooth Low Energy Implementations | Microchip Technology
Vendor Advisory

CVEs referencing this url
https://www.computer.org/csdl/proceedings/sp/2023/1He7WWuJExG

Table of Contents - 2023 IEEE Symposium on Security and Privacy (SP) | IEEE Computer Society Digital Library
Third Party Advisory

CVEs referencing this url
https://microchip.com

Smart | Connected | Secure | Microchip Technology
Product

CVEs referencing this url
https://www.computer.org/csdl/proceedings-article/sp/2023/933600a521/1He7Yja1AYM

Blue's Clues: Practical Discovery of Non-Discoverable Bluetooth Devices
Exploit;Technical Description;Third Party Advisory

CVEs referencing this url

Jump to

Vulnerability Details : CVE-2022-46403

Products affected by CVE-2022-46403

Exploit prediction scoring system (EPSS) score for CVE-2022-46403

CVSS scores for CVE-2022-46403

CWE ids for CVE-2022-46403

References for CVE-2022-46403