Is CVE-2021-37604 in the CISA KEV catalog?

No. CVE-2021-37604 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-37604?

CVE-2021-37604 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2021-37604?

CVE-2021-37604 has an EPSS score of 1.23% (65th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2021-37604?

No published fix for CVE-2021-37604 has been found yet. Check the linked vendor advisories for guidance as it becomes available.

CVE & CISA-KEV Catalog

CVE-2021-37604

HIGH

7.5

CVSS v3

NVD

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.

CWE-670

How to fix

No published remediation has been found for this vulnerability's affected products yet.

Mitigation guidance may be in the linked vendor advisories in the References section below.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityNone

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

Exploit Intelligence

1.23%probability of exploitation in 30 days

65thpercentile

Moderate risk: more likely to be exploited than 65% of all known CVEs.

References

Vendor Advisory5

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.