Back to Database
Status published
High
CVE-2021-45337
Privilege escalation vulnerability in the Self-Defense driver of Avast Antivirus...
Vulnerability Description
Privilege escalation vulnerability in the Self-Defense driver of Avast Antivirus prior to 20.8 allows a local user with SYSTEM privileges to gain elevated privileges by "hollowing" process wsc_proxy.exe which could lead to acquire antimalware (AM-PPL) protection.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
THREAT MONITOR
Am I Vulnerable?
Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2021-45337
Credits & Attribution
No credits recorded in the NVD database.
References
More from avast
View All →CVE-2022-28965
Multiple DLL hijacking vulnerabilities via the components instup.exe and wsc_proxy.exe...
Medium
6.5
CVE-2022-28964
An arbitrary file write vulnerability in Avast Premium Security before...
High
7.1
CVE-2021-45339
Privilege escalation vulnerability in Avast Antivirus prior to 20.4 allows...
High
7.8
CVE-2021-45338
Multiple privilege escalation vulnerabilities in Avast Antivirus prior to 20.4...
High
7.8
CVE-2021-45336
Privilege escalation vulnerability in the Sandbox component of Avast Antivirus...
High
8.8
Affected Vendor
avast
View all reports →Affected Software
antivirus
Vulnerable Versions:
0
Timeline
Official Publish:
December 27th, 2021
Last Modified:
August 4th, 2024
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.