HIGH
CVE-2022-46399
NVD-CWE-noinfoPublished: December 19, 2022· Updated: Jun 17, 2026
7.5
CVSS v3.1
Official Description
The Microchip RN4870 module firmware 1.43 (and the Microchip PIC LightBlue Explorer Demo 4.2 DT100112) is unresponsive with ConReqTimeoutZero.
Technical Analysis
CVE-2022-46399 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.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.5.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorAdjacent
Attack ComplexityHigh
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Vendors & Products
microchip28 product(s)
bm78 firmwarebm78bm83 firmwarebm83rn4870 firmwarern4870rn4871 firmwarern4871bm70 firmwarebm70bm71 firmwarebm71+16
Source: NVD CPE · 28 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-2022-46399
CVSS Score7.5 / 10
SeverityHIGH
WeaknessNVD-CWE-noinfo
CISA KEVNo
Affected1 vendor(s)
PublishedDec 19, 2022
Related CVEs (NVD-CWE-noinfo)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2022-46399 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.