Description
An attacker might be able to trick DNSdist into allocating too much memory while processing DNS over QUIC or DNS over HTTP/3 payloads, resulting in a denial of service. In setups with a large quantity of memory available this usually results in an exception and the QUIC connection is properly closed, but in some cases the system might enter an out-of-memory state instead and terminate the process.
Scores
CVSS v3
5.3
EPSS
0.0001
EPSS Percentile
1.0%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-789
Status
published
Products (3)
PowerDNS/DNSdist
1.9.0 - 1.9.12
powerdns/dnsdist
1.9.0 - 1.9.12
PowerDNS/DNSdist
2.0.0 - 2.0.3
Published
Mar 31, 2026
Tracked Since
Mar 31, 2026