CVE-2026-44805: CWE-416: Use After Free in Microsoft Windows Server 2019
Use after free in Windows Network Controller (NC) Host Agent allows an authorized attacker to deny service locally.
AI Analysis
Technical Summary
This vulnerability, identified as CVE-2026-44805, involves a use-after-free condition in the Windows Network Controller Host Agent on Windows Server 2019 (version 10.0.17763.0). An attacker with local privileges can exploit this flaw to cause a denial of service by triggering the use of freed memory. The vulnerability does not impact confidentiality or integrity but affects availability. Microsoft has published an official fix to address this issue.
Potential Impact
An authorized local attacker can exploit this vulnerability to cause a denial of service on affected Windows Server 2019 systems by leveraging a use-after-free flaw in the Network Controller Host Agent. There is no impact on confidentiality or integrity according to the CVSS vector. No known exploits are reported in the wild at this time.
Mitigation Recommendations
Microsoft has released an official fix for this vulnerability. It is recommended to apply the provided security update from the Microsoft Security Response Center to remediate the issue. No additional mitigation actions are indicated by the vendor advisory.
CVE-2026-44805: CWE-416: Use After Free in Microsoft Windows Server 2019
Description
Use after free in Windows Network Controller (NC) Host Agent allows an authorized attacker to deny service locally.
CVSS v3.1
Score 5.5medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability, identified as CVE-2026-44805, involves a use-after-free condition in the Windows Network Controller Host Agent on Windows Server 2019 (version 10.0.17763.0). An attacker with local privileges can exploit this flaw to cause a denial of service by triggering the use of freed memory. The vulnerability does not impact confidentiality or integrity but affects availability. Microsoft has published an official fix to address this issue.
Potential Impact
An authorized local attacker can exploit this vulnerability to cause a denial of service on affected Windows Server 2019 systems by leveraging a use-after-free flaw in the Network Controller Host Agent. There is no impact on confidentiality or integrity according to the CVSS vector. No known exploits are reported in the wild at this time.
Mitigation Recommendations
Microsoft has released an official fix for this vulnerability. It is recommended to apply the provided security update from the Microsoft Security Response Center to remediate the issue. No additional mitigation actions are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-05-07T20:07:18.270Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-44805","vendor":"Microsoft"}]
Threat ID: 6a284cce8dd33fbd85664a06
Added to database: 06/09/2026, 17:26:38 UTC
Last enriched: 07/29/2026, 21:51:53 UTC
Last updated: 07/31/2026, 21:26:44 UTC
Views: 97
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