CVE-2018-8256

Name: CVE-2018-8256
Creator: NVD / NIST
Published: 2018-11-14T01:29:00.253+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 22.64%

Last modified Jun 17, 2026

CVE-2018-8256 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 22.64% chance of exploitation in the next 30 days.

Description

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.

Metrics

EPSS Probability

22.64%

97.4th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions	Update
Microsoft	Microsoft.Powershell.Archive	1.2.2.0	—
Microsoft	Powershell Core	6.0	—
Microsoft	Powershell Core	6.1	—
Microsoft	Windows 10	All versions	—
Microsoft	Windows 10	1607	—
Microsoft	Windows 10	1703	—
Microsoft	Windows 10	1709	—
Microsoft	Windows 10	1803	—
Microsoft	Windows 10	1809	—
Microsoft	Windows 7	All versions	Sp1
Microsoft	Windows 8.1	All versions	—
Microsoft	Windows Rt 8.1	All versions	—
Microsoft	Windows Server 2008	r2	Sp1
Microsoft	Windows Server 2012	All versions	—
Microsoft	Windows Server 2012	r2	—
Microsoft	Windows Server 2016	All versions	—
Microsoft	Windows Server 2016	1709	—
Microsoft	Windows Server 2016	1803	—
Microsoft	Windows Server 2019	All versions	—

References

http://www.securityfocus.com/bid/105781Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1042108Third Party Advisory, VDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8256Patch, Vendor Advisory
http://www.securityfocus.com/bid/105781Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1042108Third Party Advisory, VDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8256Patch, Vendor Advisory

Timeline

Published: Nov 14, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-8256?

How severe is CVE-2018-8256?

Severity scoring for CVE-2018-8256 is pending analysis. The EPSS model estimates a 22.64% probability of exploitation in the next 30 days.

How do I fix CVE-2018-8256?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-8256?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST