SB2026071591 - Multiple vulnerabilities in Microsoft DirectX Graphics Kernel
Published: July 15, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 8 vulnerabilities.
1) Use-after-free (CVE-ID: CVE-2026-50353)
CWE-ID: CWE-416 - Use After Free
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to compromise vulnerable system.
The vulnerability exists due to a use-after-free error in DirectX Graphics Kernel. A local user can gain elevated privileges on the target system.
2) Heap-based buffer overflow (CVE-ID: CVE-2026-50375)
CWE-ID: CWE-122 - Heap-based Buffer Overflow
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to escalate privileges the target system.
The vulnerability exists due to a boundary error in DirectX Graphics Kernel. A local user can pass specially crafted data to the application, trigger a heap-based buffer overflow and gain elevated privileges on the system.
3) Untrusted Pointer Dereference (CVE-ID: CVE-2026-50382)
CWE-ID: CWE-822 - Untrusted Pointer Dereference
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to untrusted pointer dereference in DirectX Graphics Kernel. A remote user can execute arbitrary code on the system.
4) Use-after-free (CVE-ID: CVE-2026-58629)
CWE-ID: CWE-416 - Use After Free
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to compromise vulnerable system.
The vulnerability exists due to a use-after-free error in DirectX Graphics Kernel. A local user can gain elevated privileges on the target system.
5) Use-after-free (CVE-ID: CVE-2026-56644)
CWE-ID: CWE-416 - Use After Free
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to compromise vulnerable system.
The vulnerability exists due to a use-after-free error in DirectX Graphics Kernel. A local user can gain elevated privileges on the target system.
6) Use-after-free (CVE-ID: CVE-2026-56643)
CWE-ID: CWE-416 - Use After Free
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to compromise vulnerable system.
The vulnerability exists due to a use-after-free error in DirectX Graphics Kernel. A local user can gain elevated privileges on the target system.
7) Use-after-free (CVE-ID: CVE-2026-50493)
CWE-ID: CWE-416 - Use After Free
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to compromise vulnerable system.
The vulnerability exists due to a use-after-free error in DirectX Graphics Kernel. A local user can gain elevated privileges on the target system.
8) Use-after-free (CVE-ID: CVE-2026-50296)
CWE-ID: CWE-416 - Use After Free
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to compromise vulnerable system.
The vulnerability exists due to a use-after-free error in DirectX Graphics Kernel. A local user can gain elevated privileges on the target system.
Remediation
Install update from vendor's website.
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50353
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50375
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50382
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58629
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56644
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56643
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50493
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50296