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CVE-2022-46403

27
FAUCET Score

CVE-2022-46403 describes a high-severity vulnerability in Microchip RN4870 module firmware 1.43 and the Microchip PIC LightBlue Explorer Demo 4.2 DT100112, where the devices mishandle reject messages. This flaw allows an unauthenticated attacker to remotely impact the integrity of the system with low attack complexity, as indicated by its CVSS score of 8.6. There is currently no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this vulnerability.

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

8.6HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
4.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.83%
Probability of exploitation in next 30 days
EPSS Percentile
53.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0083 is in the 29th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 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