CVE-2025-30187

3.7 lowEPSS 0.3%

Low (3.7). EPSS 0.3% chance of exploitation in the next 30 days.

In some circumstances, when DNSdist is configured to use the nghttp2 library to process incoming DNS over HTTPS queries, an attacker might be able to cause a denial of service by crafting a DoH exchange that triggers an unbounded I/O read loop, causing an unexpected consumption of CPU resources.

Severity

CVSS 3.1

3.7 low

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

EPSS: 0.3% chance of exploitation in the next 30 days; higher than 22% of CVEs (scores of 2026-10-31)
CWE: CWE-835
Published: 2025-09-18
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

References

https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2025-05.html
http://www.openwall.com/lists/oss-security/2025/09/18/1

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