Critical severity · published Mar 17, 2017
CVE-2017-0021
Hyper-V in Microsoft Windows 10 1607 and Windows Server 2016 does not properly validate vSMB packet data, which allows attackers to execute arbitrary code on a target OS, aka…
9.0
CVSS
1.7%
EPSS
No
On KEV
Description
Hyper-V in Microsoft Windows 10 1607 and Windows Server 2016 does not properly validate vSMB packet data, which allows attackers to execute arbitrary code on a target OS, aka "Hyper-V System Data Structure Vulnerability." This vulnerability is different from that described in CVE-2017-0095.
CVSS vector
CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack vector
Adjacent
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)1.7% · higher than 77% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WI
Windows · Microsoft
1607 · source: NVD
WS
Windows Server 2016 · Microsoft
All versions, or not specified · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-0021
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-0021
Third Party Advisory
http://www.securityfocus.com/bid/96020
www.securitytracker.com
http://www.securitytracker.com/id/1037999
Mitigation
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0021
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