What’s Vulnerable › Vulnerabilities

CVE-2024-25590: Crafted responses can lead to a denial of service due to cache inefficiencies in the Recursor

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-10-03 · updated 2026-06-17
• Weakness: CWE-20

Description

An attacker can publish a zone containing specific Resource Record Sets. Repeatedly processing and caching results for these sets can lead to a denial of service.

Affected products

• PowerDNS Recursor: before 4.9.9; from 5.0.0 before 5.0.9; from 5.1.0 before 5.1.2 — fixed in 4.9.9, 5.0.9, 5.1.2

How to fix

Upgrade to a fixed version: PowerDNS Recursor 4.9.9, 5.0.9, 5.1.2. Check the vendor advisory for mitigations.

References

• https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2024-04.html
• http://www.openwall.com/lists/oss-security/2024/10/03/3

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