CVE-2026-48581

High CVSS 7.8

Published 2026-07-14 · last changed 2026-07-24

The fix

Microsoft publishes remediation for this across 1 product branch. The fixed build differs per Windows version, so the row that matters is the one matching the machine you are looking at.

Windows version	Fixed in build	Update	Released
Surface Windows Dev Kit	not published	no fix available	2026-09-20

Having the KB is not the same as knowing whether a machine has it. Windows updates supersede each other, so the update you installed often covers a fix that shipped in an earlier one. Paste your build into the patch checker and it walks that chain for you.

What it is

Insufficient granularity of access control in Microsoft Surface allows an authorized attacker to elevate privileges locally.

Sources

NVD record for CVE-2026-48581
Microsoft Security Update Guide

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