CVE-2025-7006
Received Received - Intake
Denial-of-Service in Avast Antivirus via Stack Memory After Free

Publication date: 2026-06-12

Last updated on: 2026-06-12

Assigner: NortonLifeLock Inc.

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.
CVSS Scores
EPSS Scores
Probability:
Percentile:
Meta Information
Published
2026-06-12
Last Modified
2026-06-12
Generated
2026-06-13
AI Q&A
2026-06-13
EPSS Evaluated
N/A
NVD
CVE-2025-7006
EUVD
EUVD-2025-210126
Affected Vendors & Products
Showing 5 associated CPEs
Vendor Product Version / Range
avast avast_antivirus to 25022500 (exc)
avast avg_antivirus to 25022500 (exc)
norton norton_antivirus to 25022500 (exc)
avast avast_one to 25022500 (exc)
avast avast_business_antivirus to 25022500 (exc)
Helpful Resources
Exploitability
CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-590 The product calls free() on a pointer to memory that was not allocated using associated heap allocation functions such as malloc(), calloc(), or realloc().
Attack-Flow Graph
AI Quick Actions
Instant insights powered by AI
Executive Summary

This vulnerability is a use of stack memory after it has been freed in Avast Antivirus products when scanning a malformed Windows PE file. This means that the antivirus software attempts to use memory that has already been released, which can cause the antivirus process to crash or behave unexpectedly.

Impact Analysis

The vulnerability may allow an attacker to cause a Denial-of-Service (DoS) condition by crashing the antivirus process. This could temporarily disable antivirus protection on the affected system, potentially exposing it to other threats.

Mitigation Strategies

To mitigate this vulnerability, ensure that your Avast Antivirus, AVG Antivirus, Norton Antivirus, Avast One, or Avast Business Antivirus products are updated to virus definition builds at or above VPS 25022500.

Since the affected scanning logic is delivered through a shared Gen Digital virus definition update stream, keeping your antivirus product updated through this channel will prevent exploitation of this issue.

Compliance Impact

The vulnerability described is a use-after-free issue in Avast Antivirus products that may allow a denial-of-service (DoS) condition of the antivirus process. There is no information provided about any impact on data confidentiality, integrity, or privacy that would directly affect compliance with standards such as GDPR or HIPAA.

Since the vulnerability does not involve unauthorized data access or leakage, but rather a potential service disruption, its effect on compliance with regulations focused on data protection and privacy is not specified.

Chat Assistant
Ask questions about this CVE
Hi! I’m here to help you understand CVE-2025-7006. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70
EPSS Chart