CVE-2025-30187

LOW EPSS 18.6%
Published Sep 18, 20259mo ago · Modified Jun 17, 20262w ago
3.7 CVSS 3.1
Low
Find Similar
Published Sep 18, 2025 9mo ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
3.7
Exploitability
2.2
Impact
1.4
Vector string
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability Low

Threat Intelligence

EPSS Exploit Probability
18.6% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-835

References 2

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

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.