CVE-2026-49798: CWE-416: Use After Free in Microsoft Windows 10 Version 1607
Use after free in Windows Kernel allows an unauthorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-49798) involves a use-after-free condition in the Windows Kernel of Windows 10 Version 1607 (build 10.0.14393.0). Exploiting this flaw enables an unauthorized local attacker to elevate privileges, potentially gaining full control over the affected system. The vulnerability is classified under CWE-416 (Use After Free). Microsoft has published an official fix to remediate this issue.
Potential Impact
Successful exploitation allows an attacker with local access to elevate privileges, compromising system confidentiality, integrity, and availability. This can lead to full system compromise under the affected Windows 10 Version 1607 environment.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided by Microsoft at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-49798 to remediate this vulnerability. No additional mitigation steps are indicated by the vendor advisory.
CVE-2026-49798: CWE-416: Use After Free in Microsoft Windows 10 Version 1607
Description
Use after free in Windows Kernel allows an unauthorized attacker to elevate privileges locally.
CVSS v3.1
Score 9.3critical
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-49798) involves a use-after-free condition in the Windows Kernel of Windows 10 Version 1607 (build 10.0.14393.0). Exploiting this flaw enables an unauthorized local attacker to elevate privileges, potentially gaining full control over the affected system. The vulnerability is classified under CWE-416 (Use After Free). Microsoft has published an official fix to remediate this issue.
Potential Impact
Successful exploitation allows an attacker with local access to elevate privileges, compromising system confidentiality, integrity, and availability. This can lead to full system compromise under the affected Windows 10 Version 1607 environment.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided by Microsoft at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-49798 to remediate this vulnerability. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-06-01T17:02:37.208Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-49798","vendor":"Microsoft"}]
Threat ID: 6a566f6f68715ace43e6b591
Added to database: 07/14/2026, 17:18:39 UTC
Last enriched: 08/13/2026, 14:25:12 UTC
Last updated: 08/28/2026, 19:39:44 UTC
Views: 59
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.