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CVE record · CVE-2025-27488

Microsoft Windows Hardware Lab Kit (HLK) Elevation of Privilege Vulnerability

CVSS 6.7 MediumEPSS 0.0040 · 34th percentile

Published by the CVE Program (CNA: microsoft) at 13 May 2025, 16:58 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 10 HLK version 20H2
  • affected 1.0.0 to before 10.1.19041.5609 custom
Microsoft Windows 10 HLK version 21H1
  • affected 1.0.0 to before 10.1.19041.5609 custom
Microsoft Windows 10 HLK version 21H2
  • affected 1.0.0 to before 10.1.19041.5609 custom
Microsoft Windows 10 HLK Version 22H2
  • affected 1.0.0 to before 10.1.19041.5609 custom
Microsoft Windows 11 HLK 22H2
  • affected 1.0.0 to before 10.1.22621.5040 custom
Microsoft Windows 11 HLK 24H2
  • affected 1.0.0 to before 10.1.26100.3478 custom
Microsoft Windows HLK for Windows 10 version 2004
  • affected 1.0.0 to before 10.1.19041.5609 custom
Microsoft Windows HLK for Windows Server 2019
  • affected 1.0.0 to before 10.1.17763.7010 custom
Microsoft Windows HLK for Windows Server 2022
  • affected 1.0.0 to before 10.1.20348.3330 custom
Microsoft Windows HLK for Windows Server 2025
  • affected 1.0.0 to before 10.1.26100.3478 custom
Microsoft Windows HLK, version 1809
  • affected 1.0.0 to before 10.1.17763.7010 custom
Identifiers
CVE-2025-27488
CNA
microsoft
Weakness (CWE)
CWE-798
Tags
Published
13 May 2025
Updated
13 Feb 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
6.7 Medium 3.1 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C CNA (microsoft)
  • CISA KEV Not listed.
  • EPSS 0.0040, the 34th percentile, on 13 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 13 May 2025. New records show when each source confirmed them.

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.