Heap-based buffer overflow in Windows Server - CVE-2026-105534
Published: November 10, 2026
Vulnerability identifier: #VU164662
CSH Severity: High
CVSS v4: 8.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-105534
CWE-ID: CWE-122
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on an affected client system.
The vulnerability exists due to a heap-based buffer overflow in Windows Storage when processing responses from a malicious server. A remote attacker can host a malicious server and convince a user to connect to it from an affected client to execute arbitrary code on the client system.
Affected software
Windows Server
How to mitigate CVE-2026-105534
Install security update from vendor's website.
Windows Server - addressed in versions 2016 10.0.14393.9688, 2019 10.0.17763.9487, 2022 10.0.20348.5870, 2025 10.0.26100.33730, 2025 10.0.26100.33822