Medium 5.9Published Apr 22, 2026

CVE-2026-33610Possible file descriptor exhaustion in forward-dnsupdate

Updated under an hour ago (Oct 28, 2026, 12:30 PM ET)

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It affects PowerDNS Authoritative. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for PowerDNS Authoritative

Exploited in the last 30 days

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.

CVSS: 5.9 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-400
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: OX
NVD analysis: Analyzed
Record last updated: Apr 22, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

PowerDNS Authoritative powerdns:authoritative (from the name)	from 5.0.0 before 5.0.4; from 4.9.0 before 4.9.14	CNA record
powerdns authoritative powerdns:authoritative	from 4.9.0 before 4.9.14; from 5.0.0 before 5.0.4	NVD

References

References

https://docs.powerdns.com/authoritative/security-advisories/powerdns-advisory-powerdns-2026-05.html	broken-link, vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.