CVE-2025-30194
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CVSS Score
V3.1EPSS Score
v2025.03.14There is a 0.0% chance that this vulnerability will be exploited in the wild within the next 30 days.
Attack Vector Metrics
Impact Metrics
Description
When DNSdist is configured to provide DoH via the nghttp2 provider, an attacker can cause a denial of service by crafting a DoH exchange that triggers an illegal memory access (double-free) and crash of DNSdist, causing a denial of service.
The remedy is: upgrade to the patched 1.9.9 version.
A workaround is to temporarily switch to the h2o provider until DNSdist has been upgraded to a fixed version.
We would like to thank Charles Howes for bringing this issue to our attention.
Available Exploits
Related News
The PowerDNS team has issued a high-severity security advisory—CVE-2025-30194—regarding a newly discovered denial-of-service (DoS) vulnerability in DNSdist, the The post High-Severity DoS Vulnerability Found in PowerDNS DNSdist (CVE-2025-30194) appeared first on Daily CyberSecurity.
Posted by Remi Gacogne on Apr 29Hi all, We released PowerDNS DNSdist 1.9.9 today, an emergency release fixing a security issue tracked as CVE-2025-30194 where a remote, unauthenticated attacker can cause a denial of service via a crafted DNS over HTTPS co…
EU Vulnerability Database
Monitored by ENISA for EU cybersecurity
ENISA Analysis
When DNSdist is configured to provide DoH via the nghttp2 provider, an attacker can cause a denial of service by crafting a DoH exchange that triggers an illegal memory access (double-free) and crash of DNSdist, causing a denial of service.
The remedy is: upgrade to the patched 1.9.9 version.
A workaround is to temporarily switch to the h2o provider until DNSdist has been upgraded to a fixed version.
We would like to thank Charles Howes for bringing this issue to our attention.
Affected Products (ENISA)
ENISA Scoring
CVSS Score (3.1)
EPSS Score
Data provided by ENISA EU Vulnerability Database. Last updated: June 20, 2025
GitHub Security Advisories
Community-driven vulnerability intelligence from GitHub
Advisory Details
CVSS Scoring
CVSS Score
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
Advisory provided by GitHub Security Advisory Database. Published: April 29, 2025, Modified: June 20, 2025