CVE-2026-27748 — Avira Internet Security Arbitrary File Deletion via Improper Link Resolution
Avira Internet Security contains an improper link resolution vulnerability in the Software Updater component. During the update process, a privileged service running as SYSTEM d…
Published: 2026-03-05 · CVSS: 7.8 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7