CVE-2026-44805 json
Windows Network Controller (NC) Host Agent Denial of Service Vulnerability
published 2026-06-09 5 mo ago modified 2026-09-24 46 d ago also EUVD-2026-35746
- cvss
- 5.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 29%
- public exploits
- 0
- none known
Summary
Use after free in Windows Network Controller (NC) Host Agent allows an authorized attacker to deny service locally.
Patch / fix
- Microsoft Windows Server 2019 10.0.17763.8880
- Microsoft Windows Server 2019 (Server Core installation) 10.0.17763.8880
- Microsoft Windows Server 2022 10.0.20348.5256
- Microsoft Windows Server 2025 10.0.26100.32995
- Microsoft Windows Server 2025 (Server Core installation) 10.0.26100.32995
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 5 mo ago
Exploit prediction
0.36% chance of exploitation in the next 30 days, higher than 29% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C |
| CNA | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Affected products
- Microsoft Windows Server 2019
- Microsoft Windows Server 2019 (Server Core installation)
- Microsoft Windows Server 2022
- Microsoft Windows Server 2025
- Microsoft Windows Server 2025 (Server Core installation)
Classification
References
-
msrc.microsoft.com
/update-guide/vulnerability/CVE-2026-44805
vendor-advisory, patch
Sources
- CVE List CVE-2026-44805
- NVD CVE-2026-44805
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