CVE-2026-33610 | BDVDB-2026-328455 Detail

PowerDNSAuthoritative

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.

Impact#

Per CVSS v3.1: confidentiality impact none, integrity impact none, availability impact high. Attack vector: network.

Weaknesses#

CWE-400 Uncontrolled Resource Consumption

References#

https://docs.powerdns.com/authoritative/security-advisories/powerdns-advisory-powerdns-2026-05.html

Exploit#

No public exploit known

History#

Version 12026-04-22Record published in the CVE List.

Published

Published: 2026-04-22
Last modified: 2026-04-22

Vendor information

Vendor: PowerDNS
Product: Authoritative

All PowerDNS vulnerabilities

Score

5.9 Medium

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 33.8.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Denial of Service

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
>= 5.0.0 and < 5.0.4
Fixed
5.0.4
Vulnerable
>= 4.9.0 and < 4.9.14
Fixed
4.9.14

Scoring System

CVSS v4.0

Not available

CVSS v3.1

5.9 Medium

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Metric breakdown
Attack Vector	Network
Attack Complexity	High
Privileges Required	None
User Interaction	None
Scope	Unchanged
Confidentiality	None
Integrity	None
Availability	High

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).