Is CVE-2022-31803 in the CISA KEV catalog?

No. CVE-2022-31803 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2022-31803?

CVE-2022-31803 has a CVSS v3 base score of 5.3 (MEDIUM).

What is the EPSS score for CVE-2022-31803?

CVE-2022-31803 has an EPSS score of 1.03% (59th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2022-31803?

Upgrade gateway to 2.3.9.38 or later.

CVE & CISA-KEV Catalog

CVE-2022-31803

MEDIUM

5.3

CVSS v3

NVD

Description

In CODESYS Gateway Server V2 an insufficient check for the activity of TCP client connections allows an unauthenticated attacker to consume all available TCP connections and prevent legitimate users or clients from establishing a new connection to the CODESYS Gateway Server V2. Existing connections are not affected and therefore remain intact.

CWE-400Resource Exhaustion

How to fix

Remediation Available

gatewayNVD

Affected:>= 2.0, < 2.3.9.38Fixed in:2.3.9.38CVE-2022-31803derived from NVD

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

ConfidentialityNone

IntegrityNone

AvailabilityLow

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

Exploit Intelligence

1.03%probability of exploitation in 30 days

59thpercentile

Moderate risk: more likely to be exploited than 59% of all known CVEs.

References

Vendor Advisory1

customers.codesys.com

Related Vulnerabilities

Other CWE-400 (Resource Exhaustion) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-44487	High	7.5	100%	KEV	Fix
CVE-2021-44228	Critical	10.0	100%	KEV + Ransom	Fix
CVE-2011-3192	High	7.8	99%	-	Fix
CVE-2019-11478	Medium	5.3	95%	-	Fix
CVE-2024-25617	Medium	5.3	89%	-	Fix
CVE-2018-1000115	High	7.5	89%	-	Fix

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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.