SB2026081249 - Multiple vulnerabilities in Microsoft Windows Kernel

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Main Vulnerability Database SB2026081249

SB2026081249 - Multiple vulnerabilities in Microsoft Windows Kernel

Published: August 12, 2026

Security Bulletin ID SB2026081249
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 8
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 8 vulnerabilities.


1) Untrusted Pointer Dereference (CVE-ID: CVE-2026-62737)

CWE-ID: CWE-822 - Untrusted Pointer Dereference

CVSSv4: 8.5 [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]


The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to untrusted pointer dereference in Windows Kernel, which leads to security restrictions bypass and privilege escalation.


2) Heap-based buffer overflow (CVE-ID: CVE-2026-61930)

CWE-ID: CWE-122 - Heap-based Buffer Overflow

CVSSv4: 8.5 [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]


The vulnerability allows a local user to escalate privileges on the target system.

The vulnerability exists due to a boundary error in Windows 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) Improper access control (CVE-ID: CVE-2026-65773)

CWE-ID: CWE-284 - Improper Access Control

CVSSv4: 8.5 [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]


The vulnerability allows a local user to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions in Windows Kernel. A local user can bypass implemented security restrictions and gain elevated privileges on the system.


4) Use-after-free (CVE-ID: CVE-2026-62788)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 7.3 [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]


The vulnerability allows a local user to compromise vulnerable system.

The vulnerability exists due to a use-after-free error in Windows Kernel. A local user can win a race condition and gain elevated privileges on the target system.


5) Use-after-free (CVE-ID: CVE-2026-62780)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 7.3 [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]


The vulnerability allows a local user to compromise vulnerable system.

The vulnerability exists due to a use-after-free error in Windows Kernel. A local user can win a race condition and gain elevated privileges on the target system.


6) Use-after-free (CVE-ID: CVE-2026-62749)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 7.3 [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]


The vulnerability allows a local user to compromise vulnerable system.

The vulnerability exists due to a use-after-free error in Windows Kernel. A local user can win a race condition and gain elevated privileges on the target system.


7) Use-after-free (CVE-ID: CVE-2026-62708)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 5.4 [CVSS:4.0/AV:P/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a local user to compromise vulnerable system.

The vulnerability exists due to a use-after-free error in Windows Kernel. An authenticated attacker with physical access can win a race condition and gain elevated privileges on the target system.


8) Use-after-free (CVE-ID: CVE-2026-61929)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 7.3 [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]


The vulnerability allows a local user to compromise vulnerable system.

The vulnerability exists due to a use-after-free error in Windows Kernel. A local user can win a race condition and gain elevated privileges on the target system.


Remediation

Install update from vendor's website.

References