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8.8
CVE-2026-88114: Windows DNS Server lets attackers run code remotely
CVE-2026-88114 · published 22 days ago
Summary
The DNS service in Windows 10 (versions 1607, 1809, 21H2, 22H2) and Windows 11 (23H2) can be tricked into executing code from an untrusted source over the network. This could allow an attacker to take control of the affected system. Apply the latest security updates from Microsoft as soon as possible to close the gap.
What to do
- Update microsoft windows 10 version 1607 to version 10.0.14393.9612 or later.
- Update microsoft windows 10 version 1809 to version 10.0.17763.9376 or later.
- Update microsoft windows 10 version 21h2 to version 10.0.19044.7807 or later.
- Update microsoft windows 11 version 23h2 to version 10.0.22631.7652 or later.
- Update microsoft windows 11 version 24h2 to version 10.0.26100.9711 or later.
- Update microsoft windows 11 version 25h2 to version 10.0.26200.9711 or later.
- Update microsoft windows 11 version 26h1 to version 10.0.28000.3231 or later.
- Update microsoft windows 11 version 26h2 to version 10.0.26300.9711 or later.
- Update microsoft windows server 2016 to version 10.0.14393.9612 or later.
- Update microsoft windows server 2016 (server core installation) to version 10.0.14393.9612 or later.
- Update microsoft windows server 2019 to version 10.0.17763.9376 or later.
- Update microsoft windows server 2019 (server core installation) to version 10.0.17763.9376 or later.
- Update microsoft windows server 2022 to version 10.0.20348.5761 or later.
- Update microsoft windows server 2025 to version 10.0.26100.33650 or later.
- Update microsoft windows server 2025 (server core installation) to version 10.0.26100.33650 or later.
- Update microsoft windows_10_1607 to version 10.0.14393.9612 or later.
- Update microsoft windows_10_1809 to version 10.0.17763.9376 or later.
- Update microsoft windows_10_21h2 to version 10.0.19044.7807 or later.
- Update microsoft windows_10_22h2 to version 10.0.19045.7807 or later.
- Update microsoft windows_11_23h2 to version 10.0.22631.7652 or later.
- Update microsoft windows_11_24h2 to version 10.0.26100.9711 or later.
- Update microsoft windows_11_25h2 to version 10.0.26200.9711 or later.
- Update microsoft windows_11_26h1 to version 10.0.28000.3231 or later.
- Update microsoft windows_11_26h2 to version 10.0.26300.9711 or later.
- Update microsoft windows_server_2016 to version 10.0.14393.9612 or later.
- Update microsoft windows_server_2019 to version 10.0.17763.9376 or later.
- Update microsoft windows_server_2022 to version 10.0.20348.5761 or later.
- Update microsoft windows_server_2025 to version 10.0.26100.33650 or later.
Affected software
| Vendor | Product | Affected versions |
|---|---|---|
| microsoft | windows 10 version 1607 | < 10.0.14393.9612 |
| microsoft | windows 10 version 1809 | < 10.0.17763.9376 |
| microsoft | windows 10 version 21h2 | < 10.0.19044.7807 |
| microsoft | windows 10 version 22h2 |
< 10.0.19044.7807 < 10.0.19045.7807 |
| microsoft | windows 11 version 23h2 | < 10.0.22631.7652 |
| microsoft | windows 11 version 24h2 | < 10.0.26100.9711 |
| microsoft | windows 11 version 25h2 | < 10.0.26200.9711 |
| microsoft | windows 11 version 26h1 | < 10.0.28000.3231 |
| microsoft | windows 11 version 26h2 | < 10.0.26300.9711 |
| microsoft | windows server 2016 | < 10.0.14393.9612 |
| microsoft | windows server 2016 (server core installation) | < 10.0.14393.9612 |
| microsoft | windows server 2019 | < 10.0.17763.9376 |
| microsoft | windows server 2019 (server core installation) | < 10.0.17763.9376 |
| microsoft | windows server 2022 | < 10.0.20348.5761 |
| microsoft | windows server 2025 | < 10.0.26100.33650 |
| microsoft | windows server 2025 (server core installation) | < 10.0.26100.33650 |
| microsoft | windows_10_1607 |
< 10.0.14393.9612 cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x64:* |
| microsoft | windows_10_1809 |
< 10.0.17763.9376 cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:* |
| microsoft | windows_10_21h2 |
< 10.0.19044.7807 cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:arm64:* |
| microsoft | windows_10_22h2 |
< 10.0.19045.7807 cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:arm64:* |
| microsoft | windows_11_23h2 |
< 10.0.22631.7652 cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:arm64:* |
| microsoft | windows_11_24h2 |
< 10.0.26100.9711 cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:arm64:* |
| microsoft | windows_11_25h2 |
< 10.0.26200.9711 cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:arm64:* |
| microsoft | windows_11_26h1 |
< 10.0.28000.3231 cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:arm64:* |
| microsoft | windows_11_26h2 |
< 10.0.26300.9711 cpe:2.3:o:microsoft:windows_11_26h2:*:*:*:*:*:*:arm64:* |
| microsoft | windows_server_2016 |
< 10.0.14393.9612 cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:* |
| microsoft | windows_server_2019 |
< 10.0.17763.9376 cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:* |
| microsoft | windows_server_2022 |
< 10.0.20348.5761 cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:x64:* |
| microsoft | windows_server_2025 |
< 10.0.26100.33650 cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:x64:* |
Original advisory text
Windows Domain Name Service Remote Code Execution Vulnerability
Untrusted pointer dereference in DNS Server allows an unauthorized attacker to execute code over a network.
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-88114 vendor-advisory patch
Internet-facing
14 days
Internal
At next upgrade
- Not known to be exploited
- Needs hands-on effort to exploit
- Gives an attacker full control
Type
CWE-822Untrusted Pointer Dereference
Timeline
Published13 Oct 2026
Updated4 Nov 2026
First seen13 Oct 2026
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