SB2021071322 - Privilege escalation in Microsoft Windows kernel
Published: July 13, 2021
Security Bulletin ID
SB2021071322
Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Buffer overflow (CVE-ID: CVE-2021-33771)
The vulnerability allows a local user to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error. A local user can run a specially crafted program to trigger memory corruption and execute arbitrary code on the system with elevated privileges.
Note, the vulnerability is being actively exploited in the wild.
Remediation
Install update from vendor's website.