CVE-2026-49167: CWE-416: Use After Free in Microsoft Windows 10 Version 1809
Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-49167) involves a use-after-free condition in the Windows Kernel on Windows 10 Version 1809 (build 10.0.17763.0). Exploitation requires local access with low privileges and no user interaction. The vulnerability can lead to elevation of privileges, allowing an attacker to gain higher system rights. Microsoft has published an official fix to remediate this issue.
Potential Impact
An authorized local attacker can exploit this use-after-free vulnerability to elevate their privileges on the affected system. There is no impact on confidentiality or integrity reported, but availability impact is high. No known exploits are currently in the wild.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-49167 to remediate this vulnerability.
CVE-2026-49167: CWE-416: Use After Free in Microsoft Windows 10 Version 1809
Description
Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.
CVSS v3.1
Score 4.7medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-49167) involves a use-after-free condition in the Windows Kernel on Windows 10 Version 1809 (build 10.0.17763.0). Exploitation requires local access with low privileges and no user interaction. The vulnerability can lead to elevation of privileges, allowing an attacker to gain higher system rights. Microsoft has published an official fix to remediate this issue.
Potential Impact
An authorized local attacker can exploit this use-after-free vulnerability to elevate their privileges on the affected system. There is no impact on confidentiality or integrity reported, but availability impact is high. No known exploits are currently in the wild.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-49167 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-05-27T23:44:09.622Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-49167","vendor":"Microsoft"}]
Threat ID: 6a566f6a68715ace43e6b3b4
Added to database: 07/14/2026, 17:18:34 UTC
Last enriched: 07/15/2026, 01:49:38 UTC
Last updated: 07/15/2026, 04:34:43 UTC
Views: 5
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