Medium severity · published Dec 19, 2022
CVE-2022-46402
The Microchip RN4870 module firmware 1.43 (and the Microchip PIC LightBlue Explorer Demo 4.2 DT100112) accepts PairCon_rmSend with incorrect values
6.5
CVSS
0.5%
EPSS
No
On KEV
Description
The Microchip RN4870 module firmware 1.43 (and the Microchip PIC LightBlue Explorer Demo 4.2 DT100112) accepts PairCon_rmSend with incorrect values.
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Adjacent
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 42% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BF
Bm70 Firmware · Microchip
1.43 · source: NVD
BF
Bm71 Firmware · Microchip
1.43 · source: NVD
BF
Bm78 Firmware · Microchip
1.43 · source: NVD
BF
Bm83 Firmware · Microchip
1.43 · source: NVD
IF
Is1870 Firmware · Microchip
1.43 · source: NVD
IF
Is1871 Firmware · Microchip
1.43 · source: NVD
PL
Pic Lightblue Explorer Demo Firmware · Microchip
4.2_dt100112 · source: NVD
RF
Rn4870 Firmware · Microchip
1.43 · source: NVD
RF
Rn4871 Firmware · Microchip
1.43 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-46402
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-46402
Product
https://microchip.com
Exploit
https://www.computer.org/csdl/proceedings-article/sp/2023/933600a521/1He7Yja1AYM
Third Party Advisory
https://www.computer.org/csdl/proceedings/sp/2023/1He7WWuJExG
Vendor Advisory
https://www.microchip.com/en-us/products/wireless-connectivity/software-vulnerability-response/deviating-behaviors-in-bluetooth-le
More from Bm70 Firmware
8.6
CVE-2022-46403
The Microchip RN4870 module firmware 1.43 (and the Microchip PIC LightBlue Explorer Demo 4.2 DT100112) mishandles reject messages
7.5
CVE-2022-46399
The Microchip RN4870 module firmware 1.43 (and the Microchip PIC LightBlue Explorer Demo 4.2 DT100112) is unresponsive with ConReqTimeoutZero
5.4
CVE-2022-46401
The Microchip RN4870 module firmware 1.43 (and the Microchip PIC LightBlue Explorer Demo 4.2 DT100112) accepts PauseEncReqPlainText before pairing is complete
5.4
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