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Fencer Vulns
high 7.8

CVE-2024-21447 json

Windows Authentication Elevation of Privilege Vulnerability

published 2024-04-09 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-19156

cvss
7.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.4%
EPSS 1.4% chance of exploitation in 30 days, percentile 72%
public exploits
0
none known

Summary

Windows Authentication Elevation of Privilege Vulnerability

Patch / fix

  • Microsoft Windows Server 2022 10.0.20348.2402
  • Microsoft Windows 11 version 21H2 10.0.22000.2899
  • Microsoft Windows 10 Version 21H2 10.0.19044.4291
  • Microsoft Windows 11 version 22H2 10.0.22621.3447
  • Microsoft Windows 10 Version 22H2 10.0.19045.4291
  • Microsoft Windows 11 version 22H3 10.0.22631.3447
  • Microsoft Windows 11 Version 23H2 10.0.22631.3447
  • Microsoft Windows Server 2022, 23H2 Edition (Server Core installation) 10.0.25398.830

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
2 y ago

Exploit prediction

1.38% chance of exploitation in the next 30 days, higher than 72% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.8 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 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Microsoft Windows Server 2022
  • Microsoft Windows 11 version 21H2
  • Microsoft Windows 10 Version 21H2
  • Microsoft Windows 11 version 22H2
  • Microsoft Windows 10 Version 22H2
  • Microsoft Windows 11 version 22H3
  • Microsoft Windows 11 Version 23H2
  • Microsoft Windows Server 2022, 23H2 Edition (Server Core installation)

Classification

Weakness
  • CWE-59 Improper Link Resolution Before File Access

References

Sources

Fencer Vulns 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.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.