CVE-2026-33258
Crafted zones can cause increased resource usage
5.3CVSSMEDIUM
Description
By publishing and querying a crafted zone an attacker can cause allocation of large entries in the negative and aggressive NSEC(3) caches.
CVSS Vector Breakdown
Exploitability
AV:NAttack VectorNetwork
AC:LAttack ComplexityLow
PR:NPrivileges RequiredNone
UI:NUser InteractionNone
Scope
S:UScopeUnchanged
Impact
C:NConfidentialityNone
I:NIntegrityNone
A:LAvailabilityLow
Weaknesses
Affected Products
powerdnsoss-projectDKNetworking Infrastructureaka powerdns recursor, powerdns authoritative, dnsdist
Attack Graph
Products CVE Techniques Tactics
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Exploitability
Official Patch Available
MITRE ATT&CK
1 technique Impact
References
Timeline
Published
Apr 22, 2026
Last Updated
Apr 27, 2026
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