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Windows Kernel Information Disclosure Vulnerability - CVE-2019-1125


An information disclosure vulnerability exists when certain central processing units (CPU) speculatively access memory. An attacker who successfully exploited the vulnerability could read privileged data across trust boundaries. To exploit this vulnerability an attacker would have to log on to an affected system and run a specially crafted application. The vulnerability would not allow an attacker to elevate user rights directly but it could be used to obtain information that could be used to try to compromise the affected system further. On January 3 2018 Microsoft released an advisory and security updates related to a newly-discovered class of hardware vulnerabilities (known as Spectre) involving speculative execution side channels that affect AMD ARM and Intel CPUs to varying degrees. This vulnerability released on August 6 2019 is a variant of the Spectre Variant 1 speculative execution side channel vulnerability and has been assigned CVE-2019-1125. Microsoft released a security update on July 9 2019 that addresses the vulnerability through a software change that mitigates how the CPU speculatively accesses memory. Note that this vulnerability does not require a microcode update from your device OEM.

  • Microsoft Windows Server 2008
  • Microsoft Windows Server 2012
  • Microsoft Windows 8.1
  • Microsoft Windows 7
  • Microsoft Windows Server 2016
  • Microsoft Windows 10
  • Microsoft Windows Server 2019
  • Microsoft Windows Server 2008 R2
  • Microsoft Windows Server 2012 R2
  • CVE-2019-1125
  • MSRC-CVE-2019-1125
  • KB4507456
  • KB4507461
  • KB4507464
  • KB4507457
  • KB4507458
  • KB4507460
  • KB4507450
  • KB4507455
  • KB4507435
  • KB4507469
  • KB4507453