Jul 2021: Windows Kernel Elevation of Privilege Vulnerability
CVE-2021-31979 Published on July 14, 2021
Windows Kernel Elevation of Privilege Vulnerability
Windows Kernel Elevation of Privilege Vulnerability
Known Exploited Vulnerability
This Microsoft Windows Kernel Privilege Escalation Vulnerability is part of CISA's list of Known Exploited Vulnerabilities. Windows Kernel Privilege Escalation Vulnerability. This CVE ID is unique from CVE-2021-33771, CVE-2021-34514.
The following remediation steps are recommended / required by November 17, 2021: Apply updates per vendor instructions.
Vulnerability Analysis
CVE-2021-31979 can be exploited with local system access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. This vulnerability is known to be actively exploited by threat actors. The potential impact of an exploit of this vulnerability is considered to be very high.
Weakness Type
What is a Buffer Overflow Vulnerability?
The software performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer.
CVE-2021-31979 has been classified to as a Buffer Overflow vulnerability or weakness.
Products Associated with CVE-2021-31979
You can be notified by email with stack.watch whenever vulnerabilities like CVE-2021-31979 are published in these products:
Affected Versions
Microsoft Windows 10 Version 1809:- Version 10.0.0 and below 10.0.17763.2061 is affected.
- Version 10.0.0 and below 10.0.17763.2061 is affected.
- Version 10.0.0 and below 10.0.17763.2061 is affected.
- Version 10.0.0 and below 10.0.18363.1679 is affected.
- Version 10.0.0 and below 10.0.19043.1110 is affected.
- Version 10.0.0 and below 10.0.19041.1110 is affected.
- Version 10.0.0 and below 10.0.19041.1110 is affected.
- Version 10.0.0 and below 10.0.19042.1110 is affected.
- Version 10.0.0 and below 10.0.19042.1110 is affected.
- Version 10.0.0 and below 10.0.10240.19003 is affected.
- Version 10.0.0 and below 10.0.14393.4530 is affected.
- Version 10.0.0 and below 10.0.14393.4530 is affected.
- Version 10.0.0 and below 10.0.14393.4530 is affected.
- Version 6.1.0 and below 6.1.7601.25661 is affected.
- Version 6.1.0 and below 6.1.7601.25661 is affected.
- Version 6.3.0 and below 6.3.9600.20069 is affected.
- Version 6.0.0 and below 6.0.6003.21167 is affected.
- Version 6.0.0 and below 6.0.6003.21167 is affected.
- Version 6.0.0 and below 6.0.6003.21167 is affected.
- Version 6.1.0 and below 6.1.7601.25661 is affected.
- Version 6.0.0 and below 6.1.7601.25661 is affected.
- Version 6.2.0 and below 6.2.9200.23409 is affected.
- Version 6.2.0 and below 6.2.9200.23409 is affected.
- Version 6.3.0 and below 6.3.9600.20069 is affected.
- Version 6.3.0 and below 6.3.9600.20069 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.