Is CVE-2022-30257 in the CISA KEV catalog?

No. CVE-2022-30257 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2022-30257?

CVE-2022-30257 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2022-30257?

CVE-2022-30257 has an EPSS score of 0.67% (48th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2022-30257?

No published fix for CVE-2022-30257 has been found yet. Check the linked vendor advisories for guidance as it becomes available.

CVE & CISA-KEV Catalog

CVE-2022-30257

CRITICAL

9.8

CVSS v3

NVD

Description

An issue was discovered in Technitium DNS Server through 8.0.2 that allows variant V1 of unintended domain name resolution. A revoked domain name can still be resolvable for a long time, including expired domains and taken-down malicious domains. The effects of an exploit would be widespread and highly impactful, because the exploitation conforms to de facto DNS specifications and operational practices, and overcomes current mitigation patches for "Ghost" domain names.

CWE-706

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.

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CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.67%probability of exploitation in 30 days

48thpercentile

Moderate risk: more likely to be exploited than 48% of all known CVEs.

References

Third-Party Advisory1

github.com

Related Vulnerabilities

Other CWE-706 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-24813	Critical	9.8	100%	KEV	Fix
CVE-2020-15505	Critical	9.8	100%	KEV	Fix
CVE-2021-40539	Critical	9.8	99%	KEV + Ransom	Fix
CVE-2024-27292	High	7.5	69%	-	Fix
CVE-2021-40856	High	7.5	51%	-	-
CVE-2021-24122	Medium	5.9	23%	-	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 2025-04-30.