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Fencer Intel
medium 6.7

CVE-2025-27488 json

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

published last yr. modified 4mo ago also EUVD-2025-14437

cvss
6.7
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 34%
public exploits
0
none known

Summary

Use of hard-coded credentials in Windows Hardware Lab Kit allows an authorized attacker to elevate privileges locally.

Patch / fix

  • Microsoft Windows 10 HLK version 20H2 10.1.19041.5609
  • Microsoft Windows 10 HLK version 21H1 10.1.19041.5609
  • Microsoft Windows 10 HLK version 21H2 10.1.19041.5609
  • Microsoft Windows 10 HLK Version 22H2 10.1.19041.5609
  • Microsoft Windows 11 HLK 22H2 10.1.22621.5040
  • Microsoft Windows 11 HLK 24H2 10.1.26100.3478
  • Microsoft Windows HLK for Windows 10 version 2004 10.1.19041.5609
  • Microsoft Windows HLK for Windows Server 2019 10.1.17763.7010
  • Microsoft Windows HLK for Windows Server 2022 10.1.20348.3330
  • Microsoft Windows HLK for Windows Server 2025 10.1.26100.3478
  • Microsoft Windows HLK, version 1809 10.1.17763.7010

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CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
last yr.

Exploit prediction

0.40% chance of exploitation in the next 30 days, higher than 34% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.1 6.7 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 3.1 6.7 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Microsoft Windows 10 HLK version 20H2
  • Microsoft Windows 10 HLK version 21H1
  • Microsoft Windows 10 HLK version 21H2
  • Microsoft Windows 10 HLK Version 22H2
  • Microsoft Windows 11 HLK 22H2
  • Microsoft Windows 11 HLK 24H2
  • Microsoft Windows HLK for Windows 10 version 2004
  • Microsoft Windows HLK for Windows Server 2019
  • Microsoft Windows HLK for Windows Server 2022
  • Microsoft Windows HLK for Windows Server 2025
  • Microsoft Windows HLK, version 1809

Classification

Weakness
  • CWE-798 Use of Hard-coded Credentials

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.