CVE-2020-20118

MEDIUM EPSS 7.0%
Published Jul 11, 20232y ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Jul 11, 2023 2y ago
Last Modified Jun 17, 2026 1w ago

Description

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.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
7.0% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-120

Affected Products 1

VendorProductVersionRange
avastantivirus* <19.7

References 2

  • avast.com http://avast.com
    Vendor Advisory
  • gitlab.com https://gitlab.com/yongchuank/avast-aswsnx-ioctl-82ac0060-oob-write
    PatchThird Party Advisory

Remediation

  • gitlab.com https://gitlab.com/yongchuank/avast-aswsnx-ioctl-82ac0060-oob-write
    PatchThird Party Advisory