SB2026020963 - Multiple DoS vulnerabilities in PowerDNS Recursor

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Main Vulnerability Database SB2026020963

SB2026020963 - Multiple DoS vulnerabilities in PowerDNS Recursor

Published: February 9, 2026

Security Bulletin ID SB2026020963
Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Resource exhaustion (CVE-ID: CVE-2026-24027)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to application does not properly control consumption of internal resources. A remote attacker can publish a query a crafted zone and increase network traffic.


2) Resource exhaustion (CVE-ID: CVE-2026-0398)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to application does not properly control consumption of internal resources. A remote attacker can trigger memory exhaustion by publishing and querying a crafted zone.


Remediation

Install update from vendor's website.

References