CVE-2026-6676

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...

CVE-2026-6676 Avira antivirus engine heap buffer OOB write when scanning a malformed POSIX tar archive

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...

PT-2026-49050

Name of the Vulnerable Software and Affected Versions Avira Antivirus versions prior to 8.3.27.12 Description A heap buffer out-of-bounds write occurs in the Avira Antivirus engine when scanning a malformed POSIX tar archive. This flaw may allow local execution of code or a denial-of-service of t...