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CVE-2026-44805

Windows Network Controller (NC) Host Agent Denial of Service Vulnerability

MEDIUM
5.5
CVSS Score
Published: June 9, 2026 at 05:06 PM UTC
Updated: July 23, 2026 at 07:32 PM UTC
3 products affected across 1 vendorWindows Server 2019Windows Server 2022Windows Server 2025

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

Use after free in Windows Network Controller (NC) Host Agent allows an authorized attacker to deny service locally.

Affected

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

Windows Server 2019· Microsoft
95%
v < 10.0.17763.888010.0.17763.0 ≤ v < 10.0.17763.888010.0.17763.0
Affected range stops below 10.0.17763.8880, so it looks safe — our inference, not a vendor statement
Windows Server 2022· Microsoft
95%
v < 10.0.20348.525610.0.20348.0 ≤ v < 10.0.20348.525610.0.20348.0
Affected range stops below 10.0.20348.5256, so it looks safe — our inference, not a vendor statement
Windows Server 2025· Microsoft
95%
v < 10.0.26100.3299510.0.26100.0 ≤ v < 10.0.26100.3299510.0.26100.0
Affected range stops below 10.0.26100.32995, 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:

Patch and advisory references

References (1)

Vendor AdvisoryPatch
Source: [email protected]
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-44805

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

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

CVSS

5.5MEDIUMmicrosoft
Vector?

Quick Info

StatusANALYZED
CWE
CWE-416CWE-822

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