CVE-2022-4173

Avast and AVG Antivirus for Windows vulnerable to Privilege Escalation

HIGH
8.8
CVSS Score
Published: December 5, 2022 at 11:15 PM UTC
Updated: June 17, 2026 at 05:20 AM UTC
3 products affected across 2 vendorsAvg AntivirusAvastAvast and AVG Antivirus

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Severity
HIGH8.8
Exploit prediction
EPSS 0.7%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

20.5 ≤ v ≤ 22.9
20.5 ≤ v ≤ 22.9

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-269

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