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CVE-2026-6676

HIGH
7.8
CVSS 3.1
Description
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.

Metadata

CVE ID
CVE-2026-6676
State
PUBLISHED
Assigner
GEN
Reserved
2026-04-20 14:46 UTC
Published
2026-06-12 22:16 UTC
Last updated
2026-06-12 22:16 UTC
Primary CWE
CWE-787
CWE-787 Out-of-bounds Write
Vendor / Product
Gen Digital / Avira Antivirus
Sources
cve.org  ·  NVD

Severity & Metrics

7.8 HIGH CVSS 3.1
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Affected products (1)
VendorProductPlatformVersions
Gen Digital Avira Antivirus Windows,macOS,Linux 0 < 8.3.27.12
Weakness (CWE)
CWESourceDescription
CWE-787 cna CWE-787 Out-of-bounds Write
CVSS scores (1)
ScoreSeverityVersionSourceVector
7.8 HIGH 3.1 cna CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
References (1)
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