Use of uninitialized resource in Windows Server - CVE-2026-113855
Published: November 11, 2026
Vulnerability identifier: #VU164955
CSH Severity: Medium
CVSS v4: 7.7 [CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-113855
CWE-ID: CWE-908
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker on the local network to execute arbitrary code.
The vulnerability exists due to use of an uninitialized resource in Windows DNS when processing network traffic. A remote attacker on the local network can exploit the uninitialized resource through interactions with the DNS service to execute arbitrary code.
Successful exploitation requires a non-default configuration in which an administrator has explicitly authorized the attacker's system to receive DNS zone transfers.
Affected software
Windows Server
How to mitigate CVE-2026-113855
Install security update from vendor's website.
Windows Server - addressed in versions 2025 10.0.26100.33730, 2025 10.0.26100.33822