CVE-2026-33261: medium-severity vulnerability in PowerDNS Recursor
Null pointer accces in aggressive NSEC(3) cache
Published
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.9epss 0.2%
exploitation probability
0.2%top 87% of all CVEs
observed exploitation
nono source reports it
A zone transition from NSEC to NSEC3 might trigger an internal inconsistency and cause a denial of service.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
PowerDNS · RecursorRelated CVEs — PowerDNS Recursor
In the same product, most dangerous first.
CVE-2026-33260MEDIUMInsufficient input validation of internal webserverEPSS 1.1%CVE-2026-33257MEDIUMInsufficient input validation of internal webserverEPSS 1.1%CVE-2024-25583HIGHCrafted responses can lead to a denial of service in Recursor if recursive forwarding is configuredEPSS 0.8%CVE-2026-33258MEDIUMCrafted zones can cause increased resource usageEPSS 0.8%CVE-2026-33256MEDIUMUnbounded memory allocation by internal web serverEPSS 0.8%CVE-2025-30195HIGHA crafted zone can lead to an illegal memory access in the PowerDNS RecursorEPSS 0.8%