CVE-2026-49169: CWE-416: Use After Free in Microsoft Windows Server 2025
Use after free in DNS Server allows an authorized attacker to execute code over a network.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-49169) involves a use-after-free condition in the DNS Server of Microsoft Windows Server 2025 (version 10.0.26100.0). An attacker with authorized access and high privileges can exploit this flaw to execute arbitrary code remotely, potentially leading to full system compromise. The vulnerability has a CVSS v3.1 base score of 8.0, indicating high impact on confidentiality, integrity, and availability. Microsoft has released an official fix to address this issue.
Potential Impact
Successful exploitation allows an authorized attacker with high privileges to execute arbitrary code remotely on the affected Windows Server 2025 system. This can lead to complete compromise of the affected server, impacting confidentiality, integrity, and availability of the system.
Mitigation Recommendations
An official fix is available from Microsoft. Administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-49169 to remediate this vulnerability.
CVE-2026-49169: CWE-416: Use After Free in Microsoft Windows Server 2025
Description
Use after free in DNS Server allows an authorized attacker to execute code over a network.
CVSS v3.1
Score 8.0high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-49169) involves a use-after-free condition in the DNS Server of Microsoft Windows Server 2025 (version 10.0.26100.0). An attacker with authorized access and high privileges can exploit this flaw to execute arbitrary code remotely, potentially leading to full system compromise. The vulnerability has a CVSS v3.1 base score of 8.0, indicating high impact on confidentiality, integrity, and availability. Microsoft has released an official fix to address this issue.
Potential Impact
Successful exploitation allows an authorized attacker with high privileges to execute arbitrary code remotely on the affected Windows Server 2025 system. This can lead to complete compromise of the affected server, impacting confidentiality, integrity, and availability of the system.
Mitigation Recommendations
An official fix is available from Microsoft. Administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-49169 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-05-27T23:44:09.623Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-49169","vendor":"Microsoft"}]
Threat ID: 6a566f6a68715ace43e6b3ba
Added to database: 07/14/2026, 17:18:34 UTC
Last enriched: 08/13/2026, 14:20:42 UTC
Last updated: 08/25/2026, 22:52:12 UTC
Views: 69
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