CVE-2018-8453highunder attackransomware

CVE-2018-8453: high-severity vulnerability in Microsoft Windows 7

Published · Updated

Follow this CVE+ Monitor Windows Server+ Monitor Windows

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

100Vexday Risk Score

Patch now. It under exploitation confirmed by CISA and has a working public exploit.

ssvc Actcvss 7.8epss 70%
from disclosure to weapon100 days
Published on NVDOct 10
1st PoC+100d
metasploitOct 9
CISA KEV+1199d
Action required by CISAfederal deadline: 2022-07-21

Apply updates per vendor instructions.

In short

A flaw in Windows' graphics system (Win32k) allows a logged-in user to gain administrator privileges by exploiting how the system handles objects in memory. An attacker with basic user access can take full control of the computer.

Technical detail

Win32k elevation of privilege vulnerability arising from improper memory object handling. Local attack vector requiring user-mode execution context; successful exploitation grants SYSTEM-level privileges. Affects Windows 7 through Windows Server 2019.

Summary generated and translated by AI from the official description.

The full analysis of this CVE is available in Portuguese →

An elevation of privilege vulnerability exists in Windows when the Win32k component fails to properly handle objects in memory, aka "Win32k Elevation of Privilege Vulnerability." This affects Windows 7, Windows Server 2012 R2, Windows RT 8.1, Windows Server 2008, Windows Server 2019, Windows Server 2012, Windows 8.1, Windows Server 2016, Windows Server 2008 R2, Windows 10, Windows 10 Servers.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Affected products
Microsoft · Windows 10Microsoft · Windows 10 ServersMicrosoft · Windows 7Microsoft · Windows 8.1Microsoft · Windows RT 8.1Microsoft · Windows Server 2008Microsoft · Windows Server 2008 R2Microsoft · Windows Server 2012Microsoft · Windows Server 2012 R2Microsoft · Windows Server 2016Microsoft · Windows Server 2019
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
Related CVEs — Microsoft Windows 7

In the same product, most dangerous first.

CVE-2022-30190HIGHMicrosoft Windows Support Diagnostic Tool (MSDT) Remote Code Execution VulnerabilityEPSS 99.2%KEVCVE-2021-40444HIGHMicrosoft MSHTML Remote Code Execution VulnerabilityEPSS 97.8%KEVCVE-2018-8174HIGHCVE-2018-8174EPSS 88.2%KEVCVE-2021-1675HIGHWindows Print Spooler Remote Code Execution VulnerabilityEPSS 85.3%KEVCVE-2021-40449HIGHWin32k Elevation of Privilege VulnerabilityEPSS 81.9%KEVCVE-2018-8120HIGHCVE-2018-8120EPSS 73.3%KEV