SB20260310104 - Multiple vulnerabilities in Microsoft Windows Kernel

Description

This security bulletin contains information about 3 vulnerabilities.

1) Use-after-free (CVE-ID: CVE-2026-26132)

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 Windows Kernel. A local user can gain elevated privileges on the target system.

2) Use-after-free (CVE-ID: CVE-2026-24289)

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 Windows Kernel. A local user can gain elevated privileges on the target system.

3) External Control of File Name or Path (CVE-ID: CVE-2026-24287)

CWE-ID: CWE-73 - External Control of File Name or Path

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 escalate privileges on the system.

The vulnerability exists due to external control of file name or path in Windows 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-2026-26132
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-24289
• https://www.zerodayinitiative.com/advisories/ZDI-26-184/
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-24287