CVE-2022-4173 - CVE House
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Status published High CVE-2022-4173

Avast and AVG Antivirus for Windows vulnerable to Privilege Escalation

Vulnerability Description

A vulnerability within the malware removal functionality of Avast and AVG Antivirus allowed an attacker with write access to the filesystem, to escalate his privileges in certain scenarios. The issue was fixed with Avast and AVG Antivirus version 22.10.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

Affected Vendor

NortonLifeLock

View all reports →

Affected Software

Avast and AVG Antivirus
Vulnerable Versions:
20.5

Timeline

Official Publish: December 5th, 2022
Last Modified: April 14th, 2025
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

Weaknesses (CWE)

CWE-269

MITRE ATT&CK TTPs

T1078 Valid Accounts
Persistence
T1098 Account Manipulation
Privilege Escalation
T1548 Abuse Elevation Control Mechanism
Privilege Escalation
T1222 File and Directory Permissions Modification
Defense Evasion
T1134 Access Token Manipulation
Defense Evasion