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CVE-2026-40208lowCWE-705

Denial of service via DoH3 queries

8Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 3.7epss 0.2%
exploitation probability
0.2%top 89% of all CVEs
observed exploitation
nono source reports it
An attacker might be able to delay the processing of DoH3 queries by sending DoH3 GET queries with an invalid DATA frame.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Affected products
PowerDNS · DNSdist