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Description

Heap-based Buffer Overflow, Out-of-bounds Read vulnerability in Avast Antivirus on MacOS when scanning a malformed file may allow Local Execution of Code or Denial-of-Service of the anitvirus engine process.This issue affects Antivirus: from 8.3.70.94 before 8.3.70.98.

PUBLISHED Reserved 2025-07-30 | Published 2025-12-01 | Updated 2025-12-01 | Assigner NLOK




CRITICAL: 9.0CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

Problem types

CWE-122 Heap-based Buffer Overflow

CWE-125 Out-of-bounds Read

Product status

Default status
affected

8.3.70.94 (custom) before 8.3.70.98
affected

Credits

Mike Zhang reporter

References

www.gendigital.com/us/en/contact-us/security-advisories/

cve.org (CVE-2025-8351)

nvd.nist.gov (CVE-2025-8351)

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