CVE Explorer
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 8.3.27.12.
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"defaultStatus":"affected","platforms":["Windows","macOS","Linux"],"product":"Avira Antivirus","vendor":"Gen Digital","versions":[{"lessThan":"8.3.27.12","status":"affected","version":"0","versionType":"custom"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:25ca4ff562cdd3fd27aa0486f1a8b1e158d7fb69096aa747b973454860dcd620 · sha256:19fea328b08bfd2c… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":7.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:25ca4ff562cdd3fd27aa0486f1a8b1e158d7fb69096aa747b973454860dcd620 · sha256:19fea328b08bfd2c… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-787","description":"CWE-787 Out-of-bounds Write","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:25ca4ff562cdd3fd27aa0486f1a8b1e158d7fb69096aa747b973454860dcd620 · sha256:19fea328b08bfd2c… · /containers/cna/problemTypes/0/descriptions/0
Source references
1 source assertion{"url":"https://www.gendigital.com/us/en/contact-us/security-advisories/"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:25ca4ff562cdd3fd27aa0486f1a8b1e158d7fb69096aa747b973454860dcd620 · sha256:19fea328b08bfd2c… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.