Heap-based buffer overflow in Microsoft Windows - CVE-2026-62688
Published: August 12, 2026
Vulnerability identifier: #VU141755
CSH Severity: Low
CVSS v4: 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]
CVE-ID: CVE-2026-62688
CWE-ID: CWE-122
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to escalate privileges.
The vulnerability exists due to heap-based buffer overflow in Windows MIDI Service Module when handling crafted local input. A local user can trigger the overflow to escalate privileges.
Successful exploitation could result in SYSTEM privileges.
Affected software
Microsoft Windows
How to mitigate CVE-2026-62688
Install security update from vendor's website.
Microsoft Windows - addressed in versions 11 24H2 10.0.26100.9106, 11 24H2 10.0.26100.9168, 11 25H2 10.0.26200.9168, 11 26H1 10.0.28000.2704