CVE-2025-7005
Received Received - Intake
Denial-of-Service in Avast Antivirus via Uncontrolled Recursion

Publication date: 2026-06-12

Last updated on: 2026-06-12

Assigner: NortonLifeLock Inc.

Description
Uncontrolled recursion 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 25031700. 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.
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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-2025-7005
EUVD
EUVD-2025-210125
Affected Vendors & Products
Showing 5 associated CPEs
Vendor Product Version / Range
avast avast_antivirus to 25031700 (exc)
avg avg_antivirus to 25031700 (exc)
norton_lifelock norton_antivirus to 25031700 (exc)
avast avast_one to 25031700 (exc)
avast avast_business_antivirus to 25031700 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-674 The product does not properly control the amount of recursion that takes place, consuming excessive resources, such as allocated memory or the program stack.
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Executive Summary

This vulnerability is an uncontrolled recursion issue in Avast Antivirus products when scanning a malformed Windows PE file. It may cause the antivirus process to enter a denial-of-service state by repeatedly processing the malformed file.

Impact Analysis

The impact of this vulnerability is a denial-of-service condition affecting the antivirus process. This means the antivirus software could become unresponsive or crash when scanning a specially crafted malformed Windows PE file, potentially leaving the system unprotected during that time.

Mitigation Strategies

To mitigate this vulnerability, ensure that your Avast Antivirus, AVG Antivirus, Norton Antivirus, Avast One, or Avast Business Antivirus installations are updated to virus definition builds at or above VPS 25031700.

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.

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