Is CVE-2021-31345 in the CISA KEV catalog?

No. CVE-2021-31345 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-31345?

CVE-2021-31345 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2021-31345?

CVE-2021-31345 has an EPSS score of 1.58% (73th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-31345?

Upgrade nucleus readystart v3 to 2014.12 or later.

CVE & CISA-KEV Catalog

CVE-2021-31345

HIGHEPSS 73th pctl

7.5

CVSS v3

NVD

Description

A vulnerability has been identified in Capital Embedded AR Classic 431-422 (All versions), Capital Embedded AR Classic R20-11 (All versions < V2303), PLUSCONTROL 1st Gen (All versions). The total length of an UDP payload (set in the IP header) is unchecked. This may lead to various side effects, including Information Leak and Denial-of-Service conditions, depending on a user-defined applications that runs on top of the UDP protocol. (FSMD-2021-0006)

CWE-1284

How to fix

Remediation Available

nucleus readystart v3NVD

Affected:< 2014.12Fixed in:2014.12CVE-2021-31345derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

1.58%probability of exploitation in 30 days

73rdpercentile

Elevated risk: more likely to be exploited than 73% of all known CVEs.

References

Vendor Advisory2

Other references6

Related Vulnerabilities

Other CWE-1284 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2022-20699	Critical	10.0	72%	KEV	-
CVE-2021-43267	Critical	9.8	58%	-	Fix
CVE-2022-31629	Medium	6.5	49%	-	Fix
CVE-2025-9316	Unscored	-	36%	-	-
CVE-2022-36620	High	7.5	23%	-	-
CVE-2008-1440	High	7.1	23%	-	-

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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.