CVE-2026-6676: Avira antivirus engine heap buffer OOB write when scanning a malformed POSIX tar archive
Gen Digital · Avira Antivirus
Fixed in 8.3.27.12 · Affected: Gen Digital Avira Antivirus before 8.3.27.12 · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 2% of scored CVEs
DescriptionCVE.org
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 products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- Gen Digital · Avira Antivirusbefore 8.3.27.12
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- Gen Digital
- Published
- June 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-6676 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.