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CVE-2021-37604 Details

Description

In version 6.5 of Microchip MiWi software and all previous versions including legacy products, there is a possibility of frame counters being validated/updated prior to the message authentication. With this vulnerability in place, an attacker may increment the incoming frame counter values by injecting messages with a sufficiently large frame counter value and invalid payload. This results in denial of service/valid packets in the network. There is also a possibility of a replay attack in the stack.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://ww1.microchip.com/downloads/en/DeviceDoc/asf-release-notes-3.50.0.100-readme.pdf	CVE	Release NotesVendor Advisory
https://www.microchip.com/en-us/development-tools-tools-and-software/libraries-code-examples-and-more/advanced-software-framework-for-sam-devices#Downloads	CVE	Vendor Advisory
https://www.microchip.com/en-us/products/wireless-connectivity/software-vulnerability-response/miwi-software-vulnerability	CVE	Vendor Advisory
https://www.microchip.com/en-us/products/wireless-connectivity/sub-ghz/miwi-protocol	CVE	Vendor Advisory
https://www.microchip.com/product-change-notifications/#/	CVE	Vendor Advisory
https://ww1.microchip.com/downloads/en/DeviceDoc/asf-release-notes-3.50.0.100-readme.pdf	[email protected]	Release NotesVendor Advisory
https://www.microchip.com/en-us/development-tools-tools-and-software/libraries-code-examples-and-more/advanced-software-framework-for-sam-devices#Downloads	[email protected]	Vendor Advisory
https://www.microchip.com/en-us/products/wireless-connectivity/software-vulnerability-response/miwi-software-vulnerability	[email protected]	Vendor Advisory
https://www.microchip.com/en-us/products/wireless-connectivity/sub-ghz/miwi-protocol	[email protected]	Vendor Advisory
https://www.microchip.com/product-change-notifications/#/	[email protected]	Vendor Advisory

see all 10 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-670	Always-Incorrect Control Flow Implementation	[email protected]

Affected Products

Product	Versions
microchip miwi	6.5
CPE cpe:2.3:a:microchip:miwi:6.5:::::::* Remediation No remediation found in references.

Change History

8 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Jul 12, 2022	CWE Remap	[email protected]
Jan 1, 2022	Modified Analysis	[email protected]
Dec 21, 2021	CVE Modified	[email protected]
Dec 16, 2021	CVE Modified	[email protected]
Aug 12, 2021	Initial Analysis	[email protected]