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CVE-2024-56946

MEDIUM
5.3
CVSS Score
Published: February 3, 2025 at 12:00 AM UTC
Updated: June 17, 2026 at 08:13 AM UTC
1 product affected across 1 vendorDNS Server

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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

DNS Server· Technitium
95%
v < 13.3
Affected range stops below 13.3, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

Release Notes
Source: [email protected]
https://github.com/TechnitiumSoftware/DnsServer/blob/master/CHANGELOG.md#version-133
Patch
Source: [email protected]
https://github.com/TechnitiumSoftware/DnsServer/commit/a7d1cfb6e836798ef9171677bf8919cf99d9dcb0

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.3MEDIUMmitre
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Vector?

Quick Info

StatusANALYZED
CWE
CWE-248

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