ZDI-26-271: Avast Premium Security Gen Self Protection Driver Exposed Dangerous Function Local Privilege Escalation Vulnerability

Published Apr 15, 2026
·
Updated

This vulnerability allows local attackers to escalate privileges on affected installations of Avast Premium Security. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The ZDI has assigned a CVSS rating of 7.8. The following CVEs are assigned: CVE-2026-5424.

Affected Software

1 affected component
Avast Avast Premium Security

Event History

Apr 15, 2026
Advisory Published
via ZDI·05:00 AM
Data Sourced
via ZDI·05:00 AM
Description
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Frequently Asked Questions

1

What is the severity of ZDI-26-271?

The severity of ZDI-26-271 is classified as high due to its potential for local privilege escalation.

2

How do I fix ZDI-26-271?

To fix ZDI-26-271, update your Avast Premium Security to the latest version provided by Avast.

3

Who is affected by ZDI-26-271?

Users of Avast Premium Security are affected by ZDI-26-271 if they have not applied the necessary updates.

4

What type of vulnerability is ZDI-26-271?

ZDI-26-271 is a local privilege escalation vulnerability targeting the Avast Premium Security Gen Self Protection Driver.

5

Can remote attackers exploit ZDI-26-271?

No, ZDI-26-271 requires local access to exploit the vulnerability, making it non-remote.

Contact

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132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
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