CVE-2019-9510
4.6 Medium
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
7.8 High
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:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.5 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
28.0%
A vulnerability in Microsoft Windows 10 1803 and Windows Server 2019 and later systems can allow authenticated RDP-connected clients to gain access to user sessions without needing to interact with the Windows lock screen. Should a network anomaly trigger a temporary RDP disconnect, Automatic Reconnection of the RDP session will be restored to an unlocked state, regardless of how the remote system was left. By interrupting network connectivity of a system, an attacker with access to a system being used as a Windows RDP client can gain access to a connected remote system, regardless of whether or not the remote system was locked. This issue affects Microsoft Windows 10, version 1803 and later, and Microsoft Windows Server 2019, version 2019 and later.
Affected configurations
| CPE | Name | Operator | Version |
|---|---|---|---|
| microsoft:windows_10 | microsoft windows 10 | eq | 1803 |
| microsoft:windows_server_2019 | microsoft windows server 2019 | eq | - |
CNA Affected
[
{
"product": "Windows 10 or newer system using RDP",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "10 *",
"status": "affected",
"version": "1803",
"versionType": "custom"
}
]
},
{
"product": "Windows Server",
"vendor": "Microsoft",
"versions": [
{
"lessThan": "2019*",
"status": "affected",
"version": "2019",
"versionType": "custom"
}
]
}
]References
docs.microsoft.com/en-us/openspecs/windows_protocols/ms-rdpbcgr/e729948a-3f4e-4568-9aef-d355e30b5389
docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2008-R2-and-2008/cc732713%28v=ws.11%29
social.technet.microsoft.com/Forums/windowsserver/en-US/1fd171de-a1b5-4721-86bf-082e4a375049/rds-2019-but-probably-other-versions-as-well-locked-rdp-session-logs-in-after-session-reconnect
www.kb.cert.org/vuls/id/576688/
Related
4.6 Medium
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
7.8 High
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:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.5 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
28.0%