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Exploited· due 2022-07-217.8highHighused in ransomware

CVE-2018-8453

Microsoft Windows 10 1507

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.

Exploitation status

  • CISA has confirmed this is being exploited in the wild. That is an observation of real attacks, not a prediction.
  • It is known to have been used in ransomware campaigns.
  • US federal civilian agencies are required to remediate it by 2022-07-21. That deadline does not bind private companies, but it is a reasonable benchmark for how urgently CISA views it.
  • A vendor advisory or patch reference has been published.

Required action

Apply updates per vendor instructions.

CISA’s wording, unedited.

What the metrics mean

  • It is requires local access to the machine.
  • For an attacker who can reach it, no special conditions are needed to exploit it.
  • To exploit it, no account is needed.
  • Beyond that, someone has to be persuaded to take an action first.

Scoring

CVSS
7.8 (v3.1)
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Assigned by
secure@microsoft.com

Dates

Published
2018-10-10
Last modified
2026-08-13
Added to KEV
2022-01-21
Remediation due
2022-07-21
Sources
CISA KEV, NVD

Affected products

  • Microsoft Windows 10 1507all versions
  • Microsoft Windows 10 1607all versions
  • Microsoft Windows 10 1703all versions
  • Microsoft Windows 10 1709all versions
  • Microsoft Windows 10 1803all versions
  • Microsoft Windows 10 1809all versions
  • Microsoft Windows 7all versions
  • Microsoft Windows 8.1all versions
  • Microsoft Windows Rt 8.1all versions
  • Microsoft Windows Server 1709all versions
  • Microsoft Windows Server 1803all versions
  • Microsoft Windows Server 2008all versions, r2

As listed in the NVD configuration data. Not a statement about your estate.

References