What is CVE-2022-45191?

CVE-2022-45191 is a medium-severity vulnerability in Microchip Rn4870, classified under Improper Validation of Integrity Check Value. CVSS score: 6.5/10. Published 2023-02-08.

How severe is CVE-2022-45191?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Microchip Rn4870

CVE-2022-45191

An issue was discovered on Microchip RN4870 1.43 devices. An attacker within BLE radio range can cause a denial of service by sending a pair confirm message with wrong values.

Published 2023-02-08 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.002 (9.4th percentile), scored 2026-10-20.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 9th percentile — 9.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Microchip Rn4870
Microchip Rn4870 Firmware — versions 1.43

Weakness classification (CWE)

CWE-354 — Improper Validation of Integrity Check Value

References

www.microchip.com/en-us/support/product-change-notification (Issue Tracking)

Frequently asked questions

What is CVE-2022-45191?: CVE-2022-45191 is a medium-severity vulnerability in Microchip Rn4870, classified under Improper Validation of Integrity Check Value. CVSS score: 6.5/10. Published 2023-02-08.
How severe is CVE-2022-45191?: Medium severity. CVSS v3 base score is 6.5 out of 10.