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CVE-2021-1663

Windows Projected File System FS Filter Driver Information Disclosure Vulnerability

Medium5.5EPSS 1.2%
Published
Updated
Reserved
Assigned by
microsoft

Description

Windows Projected File System FS Filter Driver Information Disclosure Vulnerability

Scores

CVSS scores of CVE-2021-1663, by who scored it
Scored byCVSSScoreVector
microsoftCNA (assigner)3.1Medium5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C
NVDNVD · Modified3.1Medium5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
EPSS (exploitation in 30 days)
1.2% · top 31% of all CVEs (2 Nov 2026)

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The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.

Weakness

  • Information Disclosure

Affected products

  • Microsoft · Windows 10 Version 20H2

    • affected 10.0.0 – < publication

  • Microsoft · Windows Server version 20H2

    • affected 10.0.0 – < publication

  • Microsoft · Windows 10 Version 2004

    • affected 10.0.0 – < publication

  • Microsoft · Windows Server version 2004

    • affected 10.0.0 – < publication

References (2)

Sources

The same CVE in the primary databases and aggregators, to check against.

Record last updated .