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VulnerabilityPublished Updated

CVE-2025-50170: Microsoft Windows 10 Version 1809 · Improper Handling of Insufficient Permissions or Privileges

Affects Microsoft Windows 10 Version 1809Source CVE Database V5

0

Not known to be exploited · CVSS 7.8 High.

Data as of 26 Oct 2026, 14:05 UTC

CVSS 3.1 base score
7.8High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% chance of exploitation in 30 days – higher than 33% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
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

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 12 Aug 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Microsoft Windows 10 Version 1809Affected
  • =10.0.17763.0
Fixed in–

AI-suggested

To mitigate the risks posed by CVE-2025-50170, European organizations should: 1) Monitor Microsoft security advisories closely and apply official patches or updates as soon as they become available for Windows 10 Version 1809 systems. 2) Restrict local access to critical systems by enforcing strict access controls and limiting user privileges to the minimum necessary. 3) Employ application whitelisting and endpoint protection solutions capable of detecting unusual privilege escalation attempts or suspicious behavior related to the Cloud Files Mini Filter Driver. 4) Conduct regular audits of user permissions and system configurations to identify and remediate excessive privileges. 5) Implement network segmentation to contain potential lateral movement if a system is compromised. 6) Educate IT staff and users about the risks of local privilege escalation and the importance of reporting unusual system behavior. 7) Consider upgrading affected systems to more recent Windows versions that are actively supported and patched. These steps go beyond generic advice by focusing on controlling local access vectors, monitoring specific driver behavior, and prioritizing patch management for legacy systems.

Description

Improper handling of insufficient permissions or privileges in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.

References

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