AVG Internet Security avgToolsSvc Link Following Local Privilege Escalation Vulnerability

October 28th, 2026
ZDI-26-832 ZDI-CAN-28694

CVE ID

CVE-2026-6064

CVSS Score

7.3 AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

Affected Vendors

AVG

Affected Products

Internet Security

Vulnerability Details

This vulnerability allows local attackers to escalate privileges on affected installations of AVG Internet Security. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.

The specific flaw exists within the avgToolsSvc service. By creating a symbolic link, an attacker can abuse the service to delete a folder. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM.

Additional Details

Fixed in AV version 26.5


Disclosure Timeline

  • 2026-04-09 - Vulnerability reported to vendor
  • 2026-10-28 - Coordinated public release of advisory
  • 2026-10-28 - Advisory Updated

Credit

Anonymous

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