8.1
CVE-2026-20856
- EPSS 0.19%
- Veröffentlicht 13.01.2026 17:56:30
- Zuletzt bearbeitet 15.01.2026 15:20:22
- Quelle secure@microsoft.com
- CVE-Watchlists
- Unerledigt
Improper input validation in Windows Server Update Service allows an unauthorized attacker to execute code over a network.
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Microsoft ≫ Windows 10 1607 HwPlatformx64 Version < 10.0.14393.8783
Microsoft ≫ Windows 10 1607 HwPlatformx86 Version < 10.0.14393.8783
Microsoft ≫ Windows 10 1809 HwPlatformx64 Version < 10.0.17763.8276
Microsoft ≫ Windows 10 1809 HwPlatformx86 Version < 10.0.17763.8276
Microsoft ≫ Windows 10 21h2 Version < 10.0.19044.6809
Microsoft ≫ Windows 10 22h2 Version < 10.0.19045.6809
Microsoft ≫ Windows 11 23h2 Version < 10.0.22631.6491
Microsoft ≫ Windows 11 24h2 Version < 10.0.26100.7623
Microsoft ≫ Windows 11 25h2 Version < 10.0.26200.7623
Microsoft ≫ Windows Server 2012 Version-
Microsoft ≫ Windows Server 2012 Versionr2
Microsoft ≫ Windows Server 2016 Version < 10.0.14393.8783
Microsoft ≫ Windows Server 2019 Version < 10.0.17763.8276
Microsoft ≫ Windows Server 2022 Version < 10.0.20348.4648
Microsoft ≫ Windows Server 2022 23h2 Version < 10.0.25398.2092
Microsoft ≫ Windows Server 2025 Version < 10.0.26100.32230
| Typ | Quelle | Score | Percentile |
|---|---|---|---|
| EPSS | FIRST.org | 0.19% | 0.411 |
| Quelle | Base Score | Exploit Score | Impact Score | Vector String |
|---|---|---|---|---|
| secure@microsoft.com | 8.1 | 2.2 | 5.9 |
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
|
CWE-20 Improper Input Validation
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.