CVE-2024-56946

MEDIUMNVD 5.35.3—Trending — 4 sources updated this week

5.3

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.

CVSS v3: 5.3
EG Score: 5.3(medium)
EPSS: 75.8%
KEV: Not listed

Published

February 3, 2025

Last Modified

June 24, 2025

References (2)

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-248

Data Freshness Timeline

(refreshed 13× in last 7d / 13× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:12 UTCepss_batch
2026-06-02 20:12 UTCepss_batch
2026-06-01 13:51 UTCepss_batch
2026-06-01 13:51 UTCepss_batch
2026-06-01 13:51 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-30 12:21 UTCEG score recompute
2026-05-30 12:21 UTCGHSA enrichment
2026-05-30 04:53 UTCOSV refresh
2026-05-29 13:43 UTCepss_batch

Frequently asked(5)

What is CVE-2024-56946?

CVE-2024-56946 is a medium vulnerability published on February 3, 2025. 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.

When was CVE-2024-56946 disclosed?

CVE-2024-56946 was first published in the National Vulnerability Database on February 3, 2025, with the most recent update on June 24, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2024-56946 actively exploited?

CVE-2024-56946 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 75.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2024-56946?

CVE-2024-56946 has a CVSS v3 base score of 5.3 (NVD).

How do I remediate CVE-2024-56946?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2024-56946, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2024-56946

📅 Published

🔄 Last Modified

🔗 References (2)