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CVE record · CVE-2026-58633

Desktop Window Manager Elevation of Privilege Vulnerability

CVSS 7.8 HighEPSS 0.0033 · 27th percentile

Published by the CVE Program (CNA: microsoft) at 14 Jul 2026, 17:10 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
VendorProductVersions
Microsoft Windows 11 version 26H1
  • affected 10.0.28000.0 to before 10.0.28000.2525 custom
Identifiers
CVE-2026-58633
CNA
microsoft
Weakness (CWE)
CWE-416
Tags
Published
14 Jul 2026
Updated
10 Nov 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Desktop Window Manager in Microsoft Windows 11 version 26H1, from 10.0.28000.0 before 10.0.28000.2525, contains a use-after-free flaw that allows privilege elevation. An attacker needs local access and an existing authorized account, and could gain higher privileges on the system. Upgrade to Windows 11 version 26H1 build 10.0.28000.2525 or later. The source gives few details on the exact conditions of exploitation.

Written 13 Nov 2026.

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

ScoreRatingCVSSVectorSource
7.8 High 3.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C CNA (microsoft)
  • CISA KEV Not listed.
  • EPSS 0.0033, the 27th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 14 Jul 2026, 17:10 UTC Confirmed by the CVE List

Sources

References from the CNA

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.