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

CVE-2026-6676

Avira antivirus engine heap buffer OOB write when scanning a malformed POSIX tar archive PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
Gen Digital / Avira Antivirus	affected 0 before 8.3.27.12

CWE

CWE-787

References

https://www.gendigital.com/us/en/contact-us/security-advisories/

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.