How severe is CVE-2024-56946?

CVE-2024-56946 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2024-56946 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-56946?

CVE-2024-56946 affects Technitium Dnsserver. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-56946?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2024-56946 have an EU (EUVD) identifier?

Yes. CVE-2024-56946 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-53455.

When was CVE-2024-56946 published?

CVE-2024-56946 was published on 2025-02-03 and last updated on 2026-06-17.

CVE-2024-56946

CVE-2024-56946 is a medium-severity vulnerability in Technitium Dnsserver with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-248.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 0% (35th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-53455
Weakness: CWE-248
Affected product: Technitium Dnsserver
Published: 2025-02-03
Last modified: 2026-06-17

Description

Denial of service in DNS-over-QUIC in Technitium DNS Server <= v13.2.2 allows remote attackers to permanently stop the server from accepting new DNS-over-QUIC connections by triggering unhandled exceptions in listener threads.

Frequently asked questions

What is CVE-2024-56946?: Denial of service in DNS-over-QUIC in Technitium DNS Server <= v13.2.2 allows remote attackers to permanently stop the server from accepting new DNS-over-QUIC connections by triggering unhandled exceptions in listener threads.
How severe is CVE-2024-56946?: CVE-2024-56946 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2024-56946 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-56946?: CVE-2024-56946 affects Technitium Dnsserver. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-56946?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-56946 have an EU (EUVD) identifier?: Yes. CVE-2024-56946 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-53455.
When was CVE-2024-56946 published?: CVE-2024-56946 was published on 2025-02-03 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:technitium:dnsserver:*:*:*:*:*:*:*:*

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