MEDIUM
CVE-2022-46400
NVD-CWE-noinfoPublished: December 19, 2022· Updated: Jun 17, 2026
5.4
CVSS v3.1
Official Description
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.
Technical Analysis
CVE-2022-46400 requires adjacent network access, limiting remote exploitation but still posing risk in shared or local network environments.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorAdjacent
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityLow
AvailabilityLow
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Affected Vendors & Products
microchip18 product(s)
bm78 firmwarebm78bm83 firmwarebm83rn4870 firmwarern4870rn4871 firmwarern4871bm70 firmwarebm70bm71 firmwarebm71+6
Source: NVD CPE · 18 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (8)
→
https://microchip.comProduct
→
https://www.computer.org/csdl/proceedings-article/sp/2023/933600a521/1He7Yja1AYMExploit · Technical Description · Third Party Advisory
→
https://www.computer.org/csdl/proceedings/sp/2023/1He7WWuJExGThird Party Advisory
→
→
https://microchip.comProduct
→
https://www.computer.org/csdl/proceedings-article/sp/2023/933600a521/1He7Yja1AYMExploit · Technical Description · Third Party Advisory
→
https://www.computer.org/csdl/proceedings/sp/2023/1He7WWuJExGThird Party Advisory
Quick Facts
CVE IDCVE-2022-46400
CVSS Score5.4 / 10
SeverityMEDIUM
WeaknessNVD-CWE-noinfo
CISA KEVNo
Affected1 vendor(s)
PublishedDec 19, 2022
Related CVEs (NVD-CWE-noinfo)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2022-46400 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.