[UPDATE] [high] PowerDNS: Multiple vulnerabilities

CSIRTS triage

What

Multiple vulnerabilities can cause Denial-of-Service conditions and affect DNS resolution integrity.

Who is affected

Users of PowerDNS are affected by these vulnerabilities.

Urgency

Remediation is high urgency due to the potential for service disruption and security risks.

Action

Update PowerDNS to the latest version to mitigate these vulnerabilities.

AI-assisted analysis generated from the source advisory — verify against the original.

Details

Source

CERT-Bund (BSI) Security Advisories (DE · national-cert · site)

Severity

high

Published

2026-07-13

Exploitation

Not in CISA KEV at last sync

Language

Machine-translated to English — verify against the original

Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2091

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

• Low exploitation riskCVE-2026-336120.11% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 2% of all scored CVEs.
• Low exploitation riskCVE-2026-400110.15% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 5% of all scored CVEs.
• Low exploitation riskCVE-2026-400120.32% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 24% of all scored CVEs.
• Low exploitation riskCVE-2026-402080.21% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 11% of all scored CVEs.
• Low exploitation riskCVE-2026-402090.29% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 21% of all scored CVEs.
• Low exploitation riskCVE-2026-402100.26% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 18% of all scored CVEs.
• Low exploitation riskCVE-2026-402110.30% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 22% of all scored CVEs.
• Low exploitation riskCVE-2026-420040.16% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 5% of all scored CVEs.
• Low exploitation riskCVE-2026-420050.34% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 27% of all scored CVEs.
• Low exploitation riskCVE-2026-423870.39% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 31% of all scored CVEs.

Referenced CVEs

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

• low[UPDATE] [low] PowerDNS Authoritative Server: Vulnerability allows Denial of Servicecert-bund
• unknownDSA-6367-1 dnsdist - security updatedebian
• unknownDSA-6369-1 pdns-recursor - security updatedebian
• unknownDSA-6368-1 pdns - security updatedebian

Recent advisories for PowerDNS

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

• medium[NEW] [medium] PowerDNS: Multiple Vulnerabilities Allow Bypassing of Security Measurescert-bund · 2026-07-23
• low[UPDATE] [low] PowerDNS Authoritative Server: Vulnerability allows Denial of Servicecert-bund · 2026-07-13
• medium[UPDATE] [medium] PowerDNS: Multiple vulnerabilitiescert-bund · 2026-07-02
• high[UPDATE] [high] PowerDNS: Multiple vulnerabilitiescert-bund · 2026-07-02

More from CERT-Bund (BSI) Security Advisories

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