Vulnerability Details : CVE-2022-46400
Potential exploit
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.
Products affected by CVE-2022-46400
- cpe:2.3:o:microchip:bm78_firmware:1.43:*:*:*:*:*:*:*
- cpe:2.3:o:microchip:bm83_firmware:1.43:*:*:*:*:*:*:*
- cpe:2.3:o:microchip:rn4870_firmware:1.43:*:*:*:*:*:*:*
- cpe:2.3:o:microchip:rn4871_firmware:1.43:*:*:*:*:*:*:*
- cpe:2.3:o:microchip:bm70_firmware:1.43:*:*:*:*:*:*:*
- cpe:2.3:o:microchip:bm71_firmware:1.43:*:*:*:*:*:*:*
- cpe:2.3:o:microchip:pic_lightblue_explorer_demo_firmware:4.2_dt100112:*:*:*:*:*:*:*
- cpe:2.3:o:microchip:is1871_firmware:1.43:*:*:*:*:*:*:*
- cpe:2.3:o:microchip:is1870_firmware:1.43:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2022-46400
0.03%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 8 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2022-46400
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.4
|
MEDIUM | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L |
2.8
|
2.5
|
134c704f-9b21-4f2e-91b3-4a467353bcc0 | 2025-04-17 |
|
5.4
|
MEDIUM | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L |
2.8
|
2.5
|
NIST |
CWE ids for CVE-2022-46400
-
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.Assigned by: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)
-
The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.Assigned by: nvd@nist.gov (Primary)
References for CVE-2022-46400
-
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 TechnologyVendor Advisory
-
https://www.computer.org/csdl/proceedings/sp/2023/1He7WWuJExG
Table of Contents - 2023 IEEE Symposium on Security and Privacy (SP) | IEEE Computer Society Digital LibraryThird Party Advisory
-
https://microchip.com
Smart | Connected | Secure | Microchip TechnologyProduct
-
https://www.computer.org/csdl/proceedings-article/sp/2023/933600a521/1He7Yja1AYM
Blue's Clues: Practical Discovery of Non-Discoverable Bluetooth DevicesExploit;Technical Description;Third Party Advisory
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