CVE-2025-7006
Avast antivirus use of stack memory after free when scanning a malformed PE file
Record summary
CVE-2025-7006 has a selected CVSS score of 5.5 (medium).
Description
Use of stack memory after free vulnerability in Avast Antivirus when scanning a malformed Windows PE file may allow Denial-of-Service of the antivirus process. This issue affects Avast Antivirus, AVG Antivirus, Norton Antivirus, Avast One, and Avast Business Antivirus on Windows, macOS, and Linux for virus definition builds before VPS 25022500. The affected scanning logic is delivered through a shared Gen Digital virus definition update stream. The same stream feeds the consumer antivirus products listed in this advisory and other Gen Digital products that embed the same engine. Mitigation flows through this update channel; installations at or above the listed build are not vulnerable regardless of which product consumes the stream.
Exploitation context
CISA SSVC decision
CISA Coordinator · SSVC 2.0.3 · Evaluated Jun 15, 2026 · Source: CVE List
Affected products and versions
5| Product | Source | Version range | Status |
|---|---|---|---|
AVG AntivirusBrowse Gen Digital / AVG AntivirusDefault status: affected | CVE List | Before 25022500 | affected |
Avast AntivirusBrowse Gen Digital / Avast AntivirusDefault status: affected | CVE List | Before 25022500 | affected |
Avast Business AntivirusBrowse Gen Digital / Avast Business AntivirusDefault status: affected | CVE List | Before 25022500 | affected |
Avast OneBrowse Gen Digital / Avast OneDefault status: affected | CVE List | Before 25022500 | affected |
Norton AntivirusBrowse Gen Digital / Norton AntivirusDefault status: affected | CVE List | Before 25022500 | affected |