Windows Kernel Elevation of Privilege Vulnerability
CVE-2021-31979

7.8HIGH

Key Information:

Vendor

Microsoft
Status
Windows 10 Version 1809
Windows Server 2019
Windows Server 2019 (server Core Installation)
Windows 10 Version 1909
Vendor
CVE Published:
14 July 2021

Badges

👾 Exploit Exists🟣 EPSS 14%🦅 CISA Reported

What is CVE-2021-31979?

Windows Kernel Elevation of Privilege Vulnerability

CISA has reported CVE-2021-31979

CISA provides regional cyber and physical services to support security and resilience across the United States. CISA monitor the most dangerious vulnerabilities and have identifed CVE-2021-31979 as being exploited but is not known by the CISA to be used in ransomware campaigns. This is subject to change at pace

The CISA's recommendation is: Apply updates per vendor instructions.

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Affected Version(s)

Windows 10 Version 1507 32-bit Systems 10.0.0 < 10.0.10240.19003

Windows 10 Version 1607 32-bit Systems 10.0.0 < 10.0.14393.4530

Windows 10 Version 1809 32-bit Systems 10.0.0 < 10.0.17763.2061

References

https://portal.msrc.microsoft.com/en-US/security-guidance...
x_refsource_MISC

EPSS Score

14% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • 👾

    Exploit known to exist

  • 🦅

    CISA Reported

  • Vulnerability published

  • Vulnerability Reserved

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