SB20260414150 - Multiple vulnerabilities in Microsoft Windows Projected File System
Published: April 14, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 5 secuirty vulnerabilities.
1) Race condition (CVE-ID: CVE-2026-27927)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a race condition in Windows Projected File System. A local user can exploit the race and escalate privileges on the system.
2) Use-after-free (CVE-ID: CVE-2026-32078)
The vulnerability allows a local user to compromise vulnerable system.
The vulnerability exists due to a use-after-free error in Windows Projected File System. A local user can gain elevated privileges on the target system.
3) Double free (CVE-ID: CVE-2026-32074)
The vulnerability allows a local user to escalate privileges on the target system.
The vulnerability exists due to a boundary error in Windows Projected File System. A local user can pass specially crafted data to the application, trigger double free error and gain elevated privileges on the target system.
4) Double free (CVE-ID: CVE-2026-32069)
The vulnerability allows a local user to escalate privileges on the target system.
The vulnerability exists due to a boundary error in Windows Projected File System. A local user can pass specially crafted data to the application, trigger double free error and gain elevated privileges on the target system.
5) Out-of-bounds read (CVE-ID: CVE-2026-26184)
The vulnerability allows a local user to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition in Windows Projected File System. A local user can trigger an out-of-bounds read error and read contents of memory on the system, leading to privilege escalation.
Remediation
Install update from vendor's website.
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-27927
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32078
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32074
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32069
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26184