CVE-2022-46402 — The Microchip RN4870 module firmware 1

The Microchip RN4870 module firmware 1.43 (and the Microchip PIC LightBlue Explorer Demo 4.2 DT100112) accepts PairCon_rmSend with incorrect values.

01What is this vulnerability?

The Microchip RN4870 module firmware 1.43 (and the Microchip PIC LightBlue Explorer Demo 4.2 DT100112) accepts PairCon_rmSend with incorrect values.

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2022-12-19T00:00:00.000Z
• Last modified: 2025-04-17T14:12:34.120Z

09References

• www.computer.org — https://www.computer.org/csdl/proceedings/sp/2023/1He7WWuJExG
• www.computer.org — https://www.computer.org/csdl/proceedings-article/sp/2023/933600a521/1He7Yja1AYM
• microchip.com — https://microchip.com
• www.microchip.com — https://www.microchip.com/en-us/products/wireless-connectivity/software-vulnerab…