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.
Published 2021-08-05 16:15:07
Updated 2022-07-12 17:42:04
Source MITRE
View at NVD,   CVE.org
Vulnerability category: Denial of service

Products affected by CVE-2021-37604

Exploit prediction scoring system (EPSS) score for CVE-2021-37604

0.20%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 57 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-37604

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
5.0
MEDIUM AV:N/AC:L/Au:N/C:N/I:P/A:N
10.0
2.9
NIST
7.5
HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
3.9
3.6
NIST

CWE ids for CVE-2021-37604

  • The code contains a control flow path that does not reflect the algorithm that the path is intended to implement, leading to incorrect behavior any time this path is navigated.
    Assigned by: nvd@nist.gov (Primary)
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