Description
Heap-based Buffer Overflow, Out-of-bounds Read vulnerability in Avira Antivirus engine when scanning a malformed file may allow Local Execution of Code or Denial-of-Service of the antivirus engine process. This issue affects Avira Antivirus on Windows, macOS, and Linux for engine builds before 8.3.70.98.
References (1)
Core 1
Core References
Various Sources
https://www.gendigital.com/us/en/contact-us/security-advisories/
Scores
CVSS v3
7.8
EPSS
0.0013
EPSS Percentile
3.1%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-122
CWE-125
Status
published
Products (2)
Avast/Antivirus
8.3.70.94 - 8.3.70.98
Gen Digital/Avira Antivirus
< 8.3.70.98
Published
Dec 01, 2025
Tracked Since
Feb 18, 2026