CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
35.3%
An elevation of privilege vulnerability exists in the default Windows SMB Server configuration which allows anonymous users to remotely access certain named pipes that are also configured to allow anonymous access to users who are logged on locally. An unauthenticated attacker who successfully exploits this configuration error could remotely send specially crafted requests to certain services that accept requests via named pipes.
To exploit the vulnerability, an attacker would have to be able to send SMB messages to an impacted Windows SMB Server for which the attacker does not already have valid credentials, and then identify an unpatched vulnerability in the handling of named pipe requests in one of the impacted services.
The update addresses the vulnerability by correcting the Windows SMB Server default configuration.
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
35.3%