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CVE-2022-46400

20
FAUCET Score

CVE-2022-46400 describes a vulnerability in Microchip RN4870 module firmware 1.43 and the PIC LightBlue Explorer Demo 4.2 DT100112, allowing attackers to bypass passkey entry during legacy Bluetooth pairing. With a CVSS score of 5.4 (Medium), this vulnerability can be exploited with low complexity over an adjacent network, leading to limited impact on confidentiality and integrity. There is currently no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
1.43CPE matchmatch criteria
cpe:2.3:o:microchip:bm78_firmware:1.43:*:*:*:*:*:*:*
1.43CPE matchmatch criteria
cpe:2.3:o:microchip:bm83_firmware:1.43:*:*:*:*:*:*:*
1.43CPE matchmatch criteria
cpe:2.3:o:microchip:rn4870_firmware:1.43:*:*:*:*:*:*:*
1.43CPE matchmatch criteria
cpe:2.3:o:microchip:rn4871_firmware:1.43:*:*:*:*:*:*:*
1.43CPE matchmatch criteria
cpe:2.3:o:microchip:bm70_firmware:1.43:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.4MEDIUM

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

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
2.8
Impact Score
2.5
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.62%
Probability of exploitation in next 30 days
EPSS Percentile
46.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0062 is in the 72nd percentile among its peer group of 1,802 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

microchip.com
Product
computer.org / csdl/proceedings-article/sp/2023/933600a521/1He7Yja1AYM
ExploitTechnical DescriptionThird Party Advisory
computer.org / csdl/proceedings/sp/2023/1He7WWuJExG
Third Party Advisory
microchip.com / en-us/products/wireless-connectivity/software-vulnerability-response/deviating-behaviors-in-bluetooth-le
Vendor Advisory