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Fencer Vulns
high 7.8

CVE-2025-55680 json

Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability

published 2025-10-14 12 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-34336

cvss
7.8
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 38%
public exploits
0
none known

Summary

Time-of-check time-of-use (toctou) race condition in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.

Patch / fix

  • Microsoft Windows 10 Version 1809 10.0.17763.7919
  • Microsoft Windows 10 Version 21H2 10.0.19044.6456
  • Microsoft Windows 10 Version 22H2 10.0.19045.6456
  • Microsoft Windows 11 version 22H2 10.0.22621.6060
  • Microsoft Windows 11 version 22H3 10.0.22631.6060
  • Microsoft Windows 11 Version 23H2 10.0.22631.6060
  • Microsoft Windows 11 Version 24H2 10.0.26100.6899
  • Microsoft Windows 11 Version 25H2 10.0.26200.6899
  • Microsoft Windows Server 2019 10.0.17763.7919
  • Microsoft Windows Server 2019 (Server Core installation) 10.0.17763.7919
  • Microsoft Windows Server 2022 10.0.20348.4294
  • Microsoft Windows Server 2022, 23H2 Edition (Server Core installation) 10.0.25398.1913
  • Microsoft Windows Server 2025 10.0.26100.6899
  • Microsoft Windows Server 2025 (Server Core installation) 10.0.26100.6899

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
total
Assessed
12 mo ago

Exploit prediction

0.44% chance of exploitation in the next 30 days, higher than 38% 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
NVD 3.1 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Microsoft Windows 10 Version 1809
  • Microsoft Windows 10 Version 21H2
  • Microsoft Windows 10 Version 22H2
  • Microsoft Windows 11 version 22H2
  • Microsoft Windows 11 version 22H3
  • Microsoft Windows 11 Version 23H2
  • Microsoft Windows 11 Version 24H2
  • Microsoft Windows 11 Version 25H2
  • Microsoft Windows Server 2019
  • Microsoft Windows Server 2019 (Server Core installation)
  • Microsoft Windows Server 2022
  • Microsoft Windows Server 2022, 23H2 Edition (Server Core installation)
  • Microsoft Windows Server 2025
  • Microsoft Windows Server 2025 (Server Core installation)

Classification

Weakness
  • CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition

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.