CVE-2026-20856

HIGH

8.1

Beschreibung

Improper input validation in Windows Server Update Service allows an unauthorized attacker to execute code over a network.

CVE Details

CVSS v3.1 Bewertung8.1

SchweregradHIGH

CVSS VektorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

AngriffsvektorNETWORK

KomplexitatHIGH

Erforderliche PrivilegienNONE

BenutzerinteraktionNONE

Veroffentlicht1/13/2026

Zuletzt geandert1/15/2026

Quellenvd

Honeypot-Sichtungen0

Betroffene Produkte

microsoft:windows_10_1607microsoft:windows_10_1809microsoft:windows_10_21h2microsoft:windows_10_22h2microsoft:windows_11_23h2microsoft:windows_11_24h2microsoft:windows_11_25h2microsoft:windows_server_2012microsoft:windows_server_2016microsoft:windows_server_2019microsoft:windows_server_2022microsoft:windows_server_2022_23h2microsoft:windows_server_2025

Schwachen (CWE)

CWE-20

Referenzen

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20856(secure@microsoft.com)

IOC Korrelationen

Keine Korrelationen erfasst

This product uses data from the NVD API but is not endorsed or certified by the NVD.