5.5
Medium
CVE-2026-70071 Improper verification of cryptographic signature in DNS Server allows an authorized attacker to perform tampering…
Description
Improper verification of cryptographic signature in DNS Server allows an authorized attacker to perform tampering locally.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Windows 10 Version 1607 10.0 | 10.0.14393.0 → < 10.0.14393.9612 | 10.0.14393.9612 |
| Windows 10 Version 1809 10.0 | 10.0.17763.0 → < 10.0.17763.9376 | 10.0.17763.9376 |
| Windows Server 2012 6.2 | 6.2.9200.0 → < 6.2.9200.26434 | 6.2.9200.26434 |
| Windows Server 2012 (Server Core installation) 6.2 | 6.2.9200.0 → < 6.2.9200.26434 | 6.2.9200.26434 |
| Windows Server 2012 R2 6.3 | 6.3.9600.0 → < 6.3.9600.23470 | 6.3.9600.23470 |
| Windows Server 2012 R2 (Server Core installation) 6.3 | 6.3.9600.0 → < 6.3.9600.23470 | 6.3.9600.23470 |
| Windows Server 2016 10.0 | 10.0.14393.0 → < 10.0.14393.9612 | 10.0.14393.9612 |
| Windows Server 2016 (Server Core installation) 10.0 | 10.0.14393.0 → < 10.0.14393.9612 | 10.0.14393.9612 |
| Windows Server 2019 10.0 | 10.0.17763.0 → < 10.0.17763.9376 | 10.0.17763.9376 |
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| Product | Affected versions | Fixed in |
|---|---|---|
| Windows Server 2019 (Server Core installation) 10.0 | 10.0.17763.0 → < 10.0.17763.9376 | 10.0.17763.9376 |
| Windows Server 2022 10.0 | 10.0.20348.0 → < 10.0.20348.5761 | 10.0.20348.5761 |
| Windows Server 2025 10.0 | 10.0.26100.0 → < 10.0.26100.33650 | 10.0.26100.33650 |
| Windows Server 2025 (Server Core installation) 10.0 | 10.0.26100.0 → < 10.0.26100.33650 | 10.0.26100.33650 |
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