What is CVE-2022-46399?

CVE-2022-46399 is a high-severity vulnerability in Microchip Bm64, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2022-12-19.

How severe is CVE-2022-46399?

High severity. CVSS v3 base score is 7.5 out of 10.

Resource exhaustion in Microchip Bm64

CVE-2022-46399

The Microchip RN4870 module firmware 1.43 (and the Microchip PIC LightBlue Explorer Demo 4.2 DT100112) is unresponsive with ConReqTimeoutZero.

Vulnerability class: DoS (Denial of Service)

Published 2022-12-19 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.008 (54.8th percentile), scored 2026-10-20.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 55th percentile — 54.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.008 · change: +0.000

Affected products

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

www.computer.org/csdl/proceedings/sp/2023/1He7WWuJExG (Third Party Advisory)
www.computer.org/csdl/proceedings-article/sp/2023/933600a521/1He7Yja1AYM (Technical Description, Exploit, Third Party Advisory)
microchip.com (Product)
www.microchip.com/en-us/products/wireless-connectivity/software-vulnerability-r… (Vendor Advisory)

Frequently asked questions

What is CVE-2022-46399?: CVE-2022-46399 is a high-severity vulnerability in Microchip Bm64, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2022-12-19.
How severe is CVE-2022-46399?: High severity. CVSS v3 base score is 7.5 out of 10.