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Fencer Intel
high 8.8

CVE-2018-8256 in the critical feed json

A remote code execution vulnerability exists when PowerShell improperly handles specially crafted files, aka "Microsoft PowerShell Remote C…

published 7y ago modified 4mo ago also EUVD-2018-19922

cvss
8.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
22.6%
EPSS 22.6% chance of exploitation in 30 days, percentile 97%
public exploits
0
none known

Summary

A remote code execution vulnerability exists when PowerShell improperly handles specially crafted files, aka "Microsoft PowerShell Remote Code Execution Vulnerability." This affects Windows RT 8.1, PowerShell Core 6.0, Microsoft.PowerShell.Archive 1.2.2.0, Windows Server 2016, Windows Server 2012, Windows Server 2008 R2, Windows Server 2019, Windows 7, Windows Server 2012 R2, PowerShell Core 6.1, Windows 10 Servers, Windows 10, Windows 8.1.

Patch / fix

Is CVE-2018-8256 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Exploit prediction

22.64% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.0 8.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 9.3 AV:N/AC:M/Au:N/C:C/I:C/A:C

Affected products

  • Microsoft Windows 7
  • Microsoft Microsoft.PowerShell.Archive
  • Microsoft Windows 10 Servers
  • Microsoft Windows Server 2012 R2
  • Microsoft Windows RT 8.1
  • Microsoft Windows Server 2008 R2
  • Microsoft Windows Server 2012
  • Microsoft PowerShell Core
  • Microsoft Windows Server 2016
  • Microsoft Windows 8.1
  • Microsoft Windows 10
  • Microsoft Windows Server 2019

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.