HOMEVULNERABILITIESCVE-2022-46399
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.

NVD Source

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
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Official Patches & Advisories

All References (8)

Quick Facts

CVE IDCVE-2022-46399
CVSS Score7.5 / 10
SeverityHIGH
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.