7.8
CWE
863
Advisory Published
Updated

CVE-2021-45339

First published: Mon Dec 27 2021(Updated: )

Privilege escalation vulnerability in Avast Antivirus prior to 20.4 allows a local user to gain elevated privileges by "hollowing" trusted process which could lead to the bypassing of Avast self-defense.

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Avast AntiVirus<20.4

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Frequently Asked Questions

  • What is CVE-2021-45339?

    CVE-2021-45339 is a privilege escalation vulnerability in Avast Antivirus prior to version 20.4.

  • How does CVE-2021-45339 work?

    CVE-2021-45339 allows a local user to gain elevated privileges by "hollowing" trusted process, which can bypass Avast self-defense mechanisms.

  • What is the severity of CVE-2021-45339?

    CVE-2021-45339 has a severity score of 7.8 (high).

  • How can I fix CVE-2021-45339?

    To fix CVE-2021-45339, update Avast Antivirus to version 20.4 or later.

  • Where can I find more information about CVE-2021-45339?

    You can find more information about CVE-2021-45339 on the Avast website and the GitHub page linked in the references.

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