CVE-2025-10101
Description
Heap buffer out-of-bounds read vulnerability in Avast Antivirus when scanning a malformed Mach-O file may allow Local Execution of Code or 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 25090300. 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.
How to fix
- Gen Digital Avast Antivirus25090300 or later
- Gen Digital AVG Antivirus25090300 or later
- Gen Digital Norton Antivirus25090300 or later
- Gen Digital Avast One25090300 or later
- Gen Digital Avast Business Antivirus25090300 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Gen Digital Avast Antivirus | v < 25090300 | 25090300 |
| Gen Digital AVG Antivirus | v < 25090300 | 25090300 |
| Gen Digital Norton Antivirus | v < 25090300 | 25090300 |
| Gen Digital Avast One | v < 25090300 | 25090300 |
| Gen Digital Avast Business Antivirus | v < 25090300 | 25090300 |
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Attack Surface Management
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