Medium severity · published Feb 3, 2025
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…
5.3
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 39% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DN
Dnsserver · Technitium
before 13.3 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-56946
CVE.org
https://www.cve.org/CVERecord?id=CVE-2024-56946
Release Notes
https://github.com/TechnitiumSoftware/DnsServer/blob/master/CHANGELOG.md#version-133
Patch
https://github.com/TechnitiumSoftware/DnsServer/commit/a7d1cfb6e836798ef9171677bf8919cf99d9dcb0
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