CVE-2021-37604

HighCVSS 7.5/10Last modified Jun 17, 2026

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 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Weakness enumeration

CWE-670

Affected software

No affected versions have been published.

Timeline

Published: Aug 5, 2021
Last modified: Jun 17, 2026
NVD status: Modified

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