CVE-2026-26154

HIGH

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

CVSS v3.1 Score

7.5

HIGH

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

Attack Vector

NETWORK

Complexity

LOW

Privileges

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Published: 4/14/2026Modified: 4/24/2026

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