Resource exhaustion in Powerdns Authoritative
CVE-2026-33610
A rogue primary server may cause file descriptor exhaustion and eventually a denial of service, when a PowerDNS secondary server forwards a DNS update request to it.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.007 (52.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 52.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.007 · change: +0.003
Affected products
- Powerdns Authoritative — versions 5.0.0, 4.9.0
Weakness classification (CWE)
References
- docs.powerdns.com/authoritative/security-advisories/powerdns-advisory-powerdns-… (Broken Link, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-33610?
- CVE-2026-33610 is a medium-severity vulnerability in Powerdns Authoritative, classified under Uncontrolled Resource Consumption. CVSS score: 5.9/10. Published 2026-04-22.
- How severe is CVE-2026-33610?
- Medium severity. CVSS v3 base score is 5.9 out of 10.