Description
Heap-based Buffer Overflow, Out-of-bounds Write vulnerability in Avast Antivirus on MacOS of a crafted Mach-O file may allow Local Execution of Code or Denial of Service of antivirus protection. This issue affects Antivirus: from 15.7 before 3.9.2025.
References (1)
Core 1
Core References
Various Sources
https://www.gendigital.com/us/en/contact-us/security-advisories/
Scores
CVSS v3
8.1
EPSS
0.0001
EPSS Percentile
2.1%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-122
CWE-787
Status
published
Products (1)
Avast/Antivirus
15.7 - 3.9.2025
Published
Dec 01, 2025
Tracked Since
Feb 18, 2026