A denial of service vulnerability exists in Windows DNS Server when it fails to properly handle DNS queries, aka 'Windows DNS Server Denial…

published 2019-07-15 7y ago modified 2026-06-17 4mo ago also EUVD-2019-1565

cvss: 7.5; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 4.5%; EPSS 4.5% chance of exploitation in 30 days, percentile 91%
public exploits: 0; none known

A denial of service vulnerability exists in Windows DNS Server when it fails to properly handle DNS queries, aka 'Windows DNS Server Denial of Service Vulnerability'.

Patch / fix

links 1

portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0811 advisory

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Exploit prediction

4.50% chance of exploitation in the next 30 days, higher than 91% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	3.0	7.5	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD	2.0	5.0	AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected products

Microsoft Windows Server
Microsoft Windows Server, version 1903 (Server Core installation)

Classification

Weakness

CWE-19 Data Processing Errors

References

portal.msrc.microsoft.com /en-US/security-guidance/advisory/CVE-2019-0811
patch, vendor-advisory

Sources

CVE List CVE-2019-0811
NVD CVE-2019-0811

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