CVE-2026-49169: CWE-416: Use After Free in Microsoft Windows Server 2025
CVE-2026-49169 is a use-after-free vulnerability in the DNS Server component of Microsoft Windows Server 2025 (version 10.0.26100.0). This vulnerability allows an authorized attacker with high privileges to execute code remotely over the network. The vulnerability has a high severity rating and has an official patch available from Microsoft.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-49169) involves a use-after-free condition in the DNS Server of Microsoft Windows Server 2025, specifically version 10.0.26100.0. An attacker with authorized access and high privileges can exploit this flaw to execute arbitrary code remotely. The vulnerability has a CVSS 3.1 base score of 8.0, indicating high impact on confidentiality, integrity, and availability. Microsoft has released an official fix to remediate 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 full compromise of the system, impacting confidentiality, integrity, and availability of the server and potentially the network it serves.
Mitigation Recommendations
An official patch is available from Microsoft to address this vulnerability. Administrators should apply the update for Windows Server 2025 version 10.0.26100.0 as provided in the Microsoft Security Response Center advisory (https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-49169). No additional mitigations are specified beyond applying the official fix.
CVE-2026-49169: CWE-416: Use After Free in Microsoft Windows Server 2025
Description
CVE-2026-49169 is a use-after-free vulnerability in the DNS Server component of Microsoft Windows Server 2025 (version 10.0.26100.0). This vulnerability allows an authorized attacker with high privileges to execute code remotely over the network. The vulnerability has a high severity rating and has an official patch available from Microsoft.
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, specifically version 10.0.26100.0. An attacker with authorized access and high privileges can exploit this flaw to execute arbitrary code remotely. The vulnerability has a CVSS 3.1 base score of 8.0, indicating high impact on confidentiality, integrity, and availability. Microsoft has released an official fix to remediate 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 full compromise of the system, impacting confidentiality, integrity, and availability of the server and potentially the network it serves.
Mitigation Recommendations
An official patch is available from Microsoft to address this vulnerability. Administrators should apply the update for Windows Server 2025 version 10.0.26100.0 as provided in the Microsoft Security Response Center advisory (https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-49169). No additional mitigations are specified beyond applying the official fix.
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: 07/15/2026, 01:49:28 UTC
Last updated: 07/15/2026, 01:49:28 UTC
Views: 2
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.