Vulnerability Description
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.
CVSS Score
7.8
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Avast | Antivirus | < 20.4 |
Related Weaknesses (CWE)
References
- https://github.com/the-deniss/Vulnerability-Disclosures/tree/main/CVE-2021-AVST0ExploitThird Party Advisory
- https://www.avast.com/hacker-hall-of-fame/en/researcher-david-eade-reports-antitVendor Advisory
- https://github.com/the-deniss/Vulnerability-Disclosures/tree/main/CVE-2021-AVST0ExploitThird Party Advisory
- https://www.avast.com/hacker-hall-of-fame/en/researcher-david-eade-reports-antitVendor Advisory
FAQ
What is CVE-2021-45339?
CVE-2021-45339 is a vulnerability with a CVSS score of 7.8 (HIGH). 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-defen...
How severe is CVE-2021-45339?
CVE-2021-45339 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-45339?
Check the references section above for vendor advisories and patch information. Affected products include: Avast Antivirus.