Unquoted Service Path Vulnerability in Avast SecureLine VPN
CVE-2020-37037

8.5HIGH

Key Information:

Vendor

Avast

Status
Avast Secureline
Vendor
CVE Published:
1 February 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2020-37037?

The Avast SecureLine VPN version 5.5.522.0 is susceptible to an unquoted service path vulnerability. This flaw may allow local users to execute arbitrary code with elevated system privileges by taking advantage of the improperly formatted service path in the software's configuration. Attackers can insert malicious code that executes with LocalSystem account permissions during the startup of the associated service, leading to potential full system compromise.

Affected Version(s)

AVAST SecureLine 5.5.522.0

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2020-37037 - Proof of Concept

References

https://www.exploit-db.com/exploits/48249
exploit
https://www.avast.com/
product
https://www.vulncheck.com/advisories/avast-secureline-sec...
third-party-advisory

CVSS V4

Score:
8.5
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Roberto Piña
.