CVE-2025-14098
Avira antivirus engine heap buffer OOB write when scanning a malformed MS-DOS executable file
CVSS Score
7.8
EPSS Score
0.0%
EPSS Percentile
0th
Heap buffer out-of-bounds write vulnerability due to integer overflow in Avira Antivirus engine when scanning a malformed MS-DOS executable 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 8.3.70.104.
| CWE | CWE-787 CWE-190 |
| Vendor | gen digital |
| Product | avira antivirus |
| Published | Jun 12, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
Gen Digital / Avira Antivirus
0 < 8.3.70.104
References
Credits
🔍 Mike Zhang, an independent security researcher