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.
History

Fri, 12 Jun 2026 23:00:00 +0000

Type Values Removed Values Added
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. 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.
Title Scanning a malformed file in Avast Antivirus 8.3.70.94 on MacOS may result in remote code execution Avira antivirus engine heap buffer OOB read when scanning a malformed file
Metrics cvssV3_1

{'score': 9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H'}

cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}


Mon, 01 Dec 2025 21:30:00 +0000

Type Values Removed Values Added
First Time appeared Apple
Apple macos
Avast
Avast antivirus
Vendors & Products Apple
Apple macos
Avast
Avast antivirus

Mon, 01 Dec 2025 16:15:00 +0000

Type Values Removed Values Added
Title Scanning a malformed file in Avast Antivirus 8.3.70.94 on MacOS may result in remote code execution
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Mon, 01 Dec 2025 16:00:00 +0000

Type Values Removed Values Added
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.
Weaknesses CWE-122
CWE-125
References
Metrics cvssV3_1

{'score': 9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: NLOK

Published:

Updated: 2026-06-12T22:32:51.689Z

Reserved: 2025-07-30T11:48:44.820Z

Link: CVE-2025-8351

cve-icon Vulnrichment

Updated: 2025-12-01T15:58:22.538Z

cve-icon NVD

Status : Deferred

Published: 2025-12-01T16:15:57.857

Modified: 2026-06-17T10:06:48.500

Link: CVE-2025-8351

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-12-01T21:27:19Z