CVE-2026-41096: critical vulnerability in Microsoft Windows 11 version 23H2
Windows DNS Client Remote Code Execution Vulnerability
Published · Updated
50Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 9.8epss 1.0%
from disclosure to weapon3 days
Published on NVDMay 12
1st PoC+3d
exploitation probability
1.0%top 39% of all CVEs
observed exploitation
nono source reports it
5 public exploit(s)
Heap-based buffer overflow in Microsoft Windows DNS allows an unauthorized attacker to execute code over a network.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Affected products
Microsoft · Windows 11 version 23H2Microsoft · Windows 11 Version 24H2Microsoft · Windows 11 Version 25H2Microsoft · Windows 11 version 26H1Microsoft · Windows Server 2022, 23H2 Edition (Server Core installation)Microsoft · Windows Server 2025Microsoft · Windows Server 2025 (Server Core installation)public PoCs found — 5
githubgithub.com/satchfunky/CVE-2026-41096-POC★ 38githubgithub.com/TwoSevenOneT/CVE-2026-41096-Attack-Surface★ 13githubgithub.com/mrk336/DNS-Mayhem-CVE-2026-41096-Deep-Dive★ 3githubgithub.com/m0n1x90/CVE-2026-41096★ 3githubgithub.com/personnumber3377/dns_client_fuzzing★ 0⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
Related CVEs — Microsoft Windows 11 version 23H2
In the same product, most dangerous first.
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