CVE-2020-20118: Avast Antivirus

Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days.

Buffer Overflow vulnerability in Avast AntiVirus before v.19.7 allows a local attacker to cause a denial of service via a crafted request to the aswSnx.sys driver.

Affected products

• Avast Antivirus: before 19.7 (fixed in 19.7)

Published 2023-07-11. Last modified 2026-07-09.