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CVE-2026-6676

Avira Antivirus

Description

Heap buffer out-of-bounds write vulnerability in Avira Antivirus engine when scanning a malformed POSIX tar archive 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 8.3.27.12.

CVSS 7.8EPSS 0.122%Risk 0.79
View source
Published
2026-06-12 23:16:45
Affected versions
<8.3.27.12
Type
Critical software
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H