CVE-2024-21342

Windows DNS Client Denial of Service Vulnerability

HIGH
7.5
CVSS Score
Published: February 13, 2024 at 06:02 PM UTC
Updated: June 17, 2026 at 07:09 AM UTC
4 products affected across 1 vendorWindows 11 23H2Windows 11 22H2Windows Server 2022 23H2

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Severity
HIGH7.5
Exploit prediction
EPSS 3%
SSVC
No known exploit

Description

Windows DNS Client Denial of Service Vulnerability

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 10.0.22621.315510.0.22621.0 ≤ v < 10.0.22621.315510.0.22621.0
Affected range stops below 10.0.22621.3155, so it looks safe — our inference, not a vendor statement
v < 10.0.22621.315510.0.22631.0 ≤ v < 10.0.22631.315510.0.22631.0
Affected range stops below 10.0.22621.3155, so it looks safe — our inference, not a vendor statement
Affected range stops below 10.0.22631.3155, so it looks safe — our inference, not a vendor statement
v < 10.0.25398.70910.0.25398.0 ≤ v < 10.0.25398.70910.0.25398.0
Affected range stops below 10.0.25398.709, so it looks safe — our inference, not a vendor statement
10.0.25398.0 ≤ v < 10.0.25398.709
Affected range stops below 10.0.25398.709, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHmicrosoft
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-400NVD-CWE-noinfo

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