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High severity · published Nov 14, 2018
CVE-2018-8256
A remote code execution vulnerability exists when PowerShell improperly handles specially crafted files, aka "Microsoft PowerShell Remote Code Execution Vulnerability." This…
8.8
CVSS
22.6%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)22.6% · higher than 98% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WI
Windows · Microsoft
1607; 1703; 1709; 1803; 1809 · source: NVD
MI
Microsoft.powershell.archive · Microsoft
1.2.2.0 · source: NVD
PC
Powershell Core · Microsoft
6.0; 6.1 · source: NVD
W7
Windows 7 · Microsoft
All versions, or not specified · source: NVD
W8
Windows 8.1 · Microsoft
All versions, or not specified · source: NVD
WR
Windows RT 8.1 · Microsoft
All versions, or not specified · source: NVD
WS
Windows Server 2008 · Microsoft
r2; r2 · source: NVD
WS
Windows Server 2012 · Microsoft
r2 · source: NVD
WS
Windows Server 2016 · Microsoft
1709; 1803 · source: NVD
WS
Windows Server 2019 · Microsoft
All versions, or not specified · source: NVD
Affected product
WI
Windows
Microsoft
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-8256
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-8256
Third Party Advisory
http://www.securityfocus.com/bid/105781
Third Party Advisory
http://www.securitytracker.com/id/1042108
Patch
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8256
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