CVE-2025-30187
3.7
LOW
CVSS 3.1
EPSS 0.01%
Description
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.
How to fix CVE-2025-30187
To remediate CVE-2025-30187, upgrade the affected package to a fixed version below.
- Debian/dnsdist—upgrade to 1.9.10-1+deb13u1 or later
Is CVE-2025-30187 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 1.9.10-1+deb13u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | LOW3.7 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L |