High severity · published Sep 13, 2018
CVE-2018-8440
Microsoft Windows Privilege Escalation Vulnerability
RansomwareIn wildKEV
7.8
CVSS
18.5%
EPSS
Yes
On KEV
Description
An elevation of privilege vulnerability exists when Windows improperly handles calls to Advanced Local Procedure Call (ALPC), aka "Windows ALPC Elevation of Privilege Vulnerability." This affects Windows 7, Windows Server 2012 R2, Windows RT 8.1, Windows Server 2008, Windows Server 2012, Windows 8.1, Windows Server 2016, Windows Server 2008 R2, Windows 10, Windows 10 Servers.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)18.5% · higher than 97% of CVEs
Exploited in the wildYes
CISA KEVListed Mar 28, 2022
Federal remediation dueApr 18, 2022
Ransomware campaign useKnown
Affected products
Which versions
WI
Windows · Microsoft
32-bit Systems; Version 1607 for 32-bit Systems; Version 1607 for x64-based Systems; Version 1703 for 32-bit Systems; Version 1703 for x64-based Systems; Version 1709 for 32-bit Systems; +4 more · source: vendor, KEV
W1
Windows 10 Servers · Microsoft
version 1709 (Server Core Installation); version 1803 (Server Core Installation) · source: vendor
W7
Windows 7 · Microsoft
32-bit Systems Service Pack 1; x64-based Systems Service Pack 1 · source: vendor, NVD
W8
Windows 8.1 · Microsoft
32-bit systems; x64-based systems · source: vendor, NVD
WR
Windows RT 8.1 · Microsoft
Windows RT 8.1 · source: vendor, NVD
WS
Windows Server 2008 · Microsoft
32-bit Systems Service Pack 2; 32-bit Systems Service Pack 2 (Server Core installation); Itanium-Based Systems Service Pack 2; x64-based Systems Service Pack 2; x64-based Systems Service Pack 2 (Server Core installation) · source: vendor, NVD
WS
Windows Server 2008 R2 · Microsoft
Itanium-Based Systems Service Pack 1; x64-based Systems Service Pack 1; x64-based Systems Service Pack 1 (Server Core installation) · source: vendor
WS
Windows Server 2012 · Microsoft
(Server Core installation) · source: vendor, NVD
WS
Windows Server 2012 R2 · Microsoft
(Server Core installation) · source: vendor
WS
Windows Server 2016 · Microsoft
(Server Core installation) · source: vendor, NVD
W1
Windows 10 1607 · Microsoft
All versions, or not specified · source: NVD
W1
Windows 10 1703 · Microsoft
All versions, or not specified · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-8440
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-8440
CISA KEV catalogue
https://www.cisa.gov/known-exploited-vulnerabilities-catalog
x_refsource_CONFIRM
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8440
x_refsource_MISC
https://blog.0patch.com/2018/09/comparing-our-micropatch-with.html
x_refsource_MISC
https://blog.0patch.com/2018/08/how-we-micropatched-publicly-dropped.html
vdb-entry
http://www.securitytracker.com/id/1041578
vdb-entry
http://www.securityfocus.com/bid/105153
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