Is CVE-2025-30187 in the CISA KEV catalog?

No. CVE-2025-30187 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-30187?

CVE-2025-30187 has a CVSS v3 base score of 3.7 (LOW).

What is the EPSS score for CVE-2025-30187?

CVE-2025-30187 has an EPSS score of 0.27% (19th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-30187?

Upgrade dnsdist on debian 13 to 1.9.10-1+deb13u1 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2025-30187

LOW

3.7

CVSS v3

NVD

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.

CWE-835

How to fix

Remediation Available

dnsdistDebian

Fixed in:1.9.10-1+deb13u1CVE-2025-30187

Fixed in:2.0.1-1CVE-2025-30187

dnsdistUbuntu

Fixed in:1.6.1-1ubuntu0.1~esm2USN-8037-1

Fixed in:1.8.3-2ubuntu0.1~esm1USN-8037-1

Fixed in:1.9.10-1ubuntu0.1USN-8037-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityLow

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

Exploit Intelligence

0.27%probability of exploitation in 30 days

19thpercentile

Low risk: more likely to be exploited than 19% of all known CVEs.

References

Other references2

Related Vulnerabilities

Other CWE-835 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-13935	High	7.5	88%	-	Fix
CVE-2020-36227	High	7.5	78%	-	Fix
CVE-2022-0778	High	7.5	71%	-	Fix
CVE-2019-14241	High	7.5	70%	-	-
CVE-2017-16944	High	7.5	63%	-	Fix
CVE-2024-20353	High	8.6	63%	KEV	-

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-11-04.