CVE-2026-41096
Windows DNS Client Remote Code Execution Vulnerability
CVE-2026-41096 is fixed in 11 products on 1 platform, first by KB5087420, released May 12, 2026. It is not reported as exploited. Patch Radar priority: Urgent.
Urgent
CVSS
9.8
Critical
Exploitation
None reported
Exploitation Unlikely
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0270
86th percentile
<p>Heap-based buffer overflow in Microsoft Windows DNS allows an unauthorized attacker to execute code over a network.</p>
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Microsoft | |||
| Windows 11 Version 23H2 for ARM64-based Systems | 22631.7079 | KB5087420 | May 12, 2026 |
| Windows 11 Version 23H2 for x64-based Systems | 22631.7219 | KB5093998 | Jun 9, 2026 |
| Windows 11 Version 24H2 for ARM64-based Systems | KB5089549 | May 12, 2026 | |
| Windows 11 Version 24H2 for ARM64-based Systems | KB5089466 | May 12, 2026 | |
| Windows 11 Version 24H2 for x64-based Systems | KB5089549 | May 12, 2026 | |
| Windows 11 Version 24H2 for x64-based Systems | KB5089466 | May 12, 2026 | |
| Windows 11 Version 25H2 for ARM64-based Systems | KB5089549 | May 12, 2026 | |
| Windows 11 Version 25H2 for ARM64-based Systems | KB5089466 | May 12, 2026 | |
| Windows 11 Version 25H2 for x64-based Systems | KB5089549 | May 12, 2026 | |
| Windows 11 Version 25H2 for x64-based Systems | KB5089466 | May 12, 2026 | |
| Windows 11 Version 26H1 for ARM64-based Systems | 28000.2113 | KB5089548 | May 12, 2026 |
| Windows 11 version 26H1 for x64-based Systems | 28000.2113 | KB5089548 | May 12, 2026 |
| Windows Server 2022, 23H2 Edition (Server Core installation) | 25398.2330 | KB5087541 | May 12, 2026 |
| Windows Server 2025 | 26100.32860 | KB5087539 | May 12, 2026 |
| Windows Server 2025 | 26100.32772 | KB5087423 | May 12, 2026 |
| Windows Server 2025 (Server Core installation) | 26100.32860 | KB5087539 | May 12, 2026 |
| Windows Server 2025 (Server Core installation) | 26100.32772 | KB5087423 | May 12, 2026 |
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