CVE-2026-33610

Possible file descriptor exhaustion in forward-dnsupdate

Published Apr 22, 2026 CVSS 3.1 · 5.9 Medium EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DSA Debian DSA DSA-6233-1 pdns security update
History
Type Values Removed Values Added
CPEs cpe:2.3:a:powerdns:authoritative:*:*:*:*:*:*:*:*
Type Values Removed Values Added
First Time appeared Powerdns
Powerdns authoritative
Vendors & Products Powerdns
Powerdns authoritative
Type Values Removed Values Added
Weaknesses CWE-400
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description 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.
Title Possible file descriptor exhaustion in forward-dnsupdate
References
Metrics cvssV3_1

{'score': 5.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
OX
Published
Updated
Apr 22, 2026, 2:26 PM
Reserved
Mar 23, 2026, 12:58 PM
Status
Analyzed
Published
Apr 22, 2026, 2:16 PM
Modified
Oct 26, 2026, 12:10 AM