Vulnerability · Published Mar 5, 2026 · Assigned by VulnCheck
CVE-2026-27748Avira Internet Security Arbitrary File Deletion via Improper Link Resolution
High 7.8
In plain English
A high-severity security flaw in Avira Internet Security from Gen Digital Inc.. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 9% of all known vulnerabilities).
Official 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 (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Gen Digital Inc. | Avira Internet Security | 0 – through 1.1.109.1990 |
Weakness: CWE-59 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H