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CVE PROGRAM SOURCE RECORD7.8 High

CVE-2026-27748

Avira Internet Security Arbitrary File Deletion via Improper Link Resolution

Description

Avira Internet Security contains an improper link resolution vulnerability in the Software Updater component. During the update process, a privileged service running as SYSTEM deletes a file under C:\\ProgramData without validating whether the path resolves through a symbolic link or reparse point. A local attacker can create a malicious link to redirect the delete operation to an arbitrary file, resulting in deletion of attacker-chosen files with SYSTEM privileges. This may lead to local privilege escalation, denial of service, or system integrity compromise depending on the targeted file and operating system configuration.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Gen Digital Inc. Avira Internet Security

Default version status: unaffected

  • 0 to ≤ 1.1.109.1990affected
  • 1.1.114.3113unaffected

References