What is CVE-2026-6676?

CVE-2026-6676 is a high-severity vulnerability, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2026-06-12.

How severe is CVE-2026-6676?

High severity. CVSS v3 base score is 7.8 out of 10.

CVE-2026-6676

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…

Vulnerability class: Buffer Overflow

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

security@nortonlifelock.com

Frequently asked questions

What is CVE-2026-6676?: CVE-2026-6676 is a high-severity vulnerability, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2026-06-12.
How severe is CVE-2026-6676?: High severity. CVSS v3 base score is 7.8 out of 10.