Heap-based buffer overflow in Microsoft Windows - CVE-2026-112967
Published: November 11, 2026
Vulnerability identifier: #VU164888
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-112967
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 Windows system.
The vulnerability exists due to a heap-based buffer overflow in Windows Xbox Live Networking Service when handling network requests. A remote attacker can send specially crafted requests to service endpoints to execute arbitrary code.
Affected software
Microsoft Windows
How to mitigate CVE-2026-112967
Install security update from vendor's website.
Microsoft Windows - addressed in versions 10 21H2 10.0.19044.7846, 10 22H2 10.0.19045.7846, 10 1809 10.0.17763.9487, 11 23H2 10.0.22631.7711, 11 24H2 10.0.26100.9911, 11 24H2 10.0.26100.9974, 11 25H2 10.0.26200.9911, 11 25H2 10.0.26200.9974, 11 26H1 10.0.28000.3501