Critical severity · published Oct 10, 2019
CVE-2019-1365
An elevation of privilege vulnerability exists when Microsoft IIS Server fails to check the length of a buffer prior to copying memory to it.An attacker who successfully exploited…
9.9
CVSS
4.4%
EPSS
No
On KEV
Description
An elevation of privilege vulnerability exists when Microsoft IIS Server fails to check the length of a buffer prior to copying memory to it.An attacker who successfully exploited this vulnerability can allow an unprivileged function ran by the user to execute code in the context of NT AUTHORITY\system escaping the Sandbox.The security update addresses the vulnerability by correcting how Microsoft IIS Server sanitizes web requests., aka 'Microsoft IIS Server Elevation of Privilege Vulnerability'.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)4.4% · higher than 91% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WI
Windows · Microsoft
1607; 1803; 1809; 1903 · 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
1803; 1903 · source: NVD
WS
Windows Server 2019 · Microsoft
All versions, or not specified · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-1365
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-1365
Patch
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1365
More from Windows
10.0
CVE-2020-1350
Microsoft Windows DNS Server Remote Code Execution Vulnerability
9.8
CVE-2025-59287
Windows Server Update Service (WSUS) Remote Code Execution Vulnerability
9.8
CVE-2019-0708
Microsoft Remote Desktop Services Remote Code Execution Vulnerability
9.8
CVE-2017-8543
Microsoft Windows Search Remote Code Execution Vulnerability
9.8
CVE-2008-4250
Microsoft Windows Buffer Overflow Vulnerability