CVE-2026-42389
A remote, anonymous attacker can exploit multiple vulnerabilities in PowerDNS to cause Denial-of-Service conditions, manipulate DNS caches, bypass security checks, disclose sensitive information, impair DNSSEC validations, or affect the integrity and availability of DNS resolution.
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.
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Exploitation outlook
- Low exploitation risk0.18% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 7% of all EPSS-scored CVEs.
Advisory coverage (1)
- high[UPDATE] [high] PowerDNS: Multiple vulnerabilitiescert-bund · 2026-07-13
External references
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[](https://www.csirts.com/cve/CVE-2026-42389)