What is the CVSS score of CVE-2020-37037?

CVE-2020-37037 has a CVSS 3.1 base score of 7.8 (High). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.0%.

Is there a public PoC exploit available for CVE-2020-37037?

Yes, a public proof-of-concept exploit is available for CVE-2020-37037. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2020-37037?

Within 24 hours: Identify all systems running Avast SecureLine 5.5.522.0 or earlier and isolate them from critical networks if possible. Within 7 days: Contact Avast for alternative versions or workarounds, and prepare a communication plan for affected users. Within 30 days: Evaluate alternative VPN solutions and develop a migration plan away from vulnerable versions; implement the compensating controls listed below on all affected systems.

CVE-2020-37037

HIGH

Unquoted Search Path or Element (CWE-428)

2026-02-01 disclosure@vulncheck.com

Code Injection

7.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.8 HIGH

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 22:01 vuln.today

PoC Detected

Feb 03, 2026 - 16:44 vuln.today

Public exploit code

CVE Published

Feb 01, 2026 - 15:16 nvd

HIGH 7.8

DescriptionCVE.org

Avast SecureLine 5.5.522.0 contains an unquoted service path vulnerability that allows local users to potentially execute code with elevated system privileges. Attackers can exploit the unquoted path in the service configuration to inject malicious code that would execute with LocalSystem account permissions during service startup.

AnalysisAI

Avast SecureLine 5.5.522.0 contains an unquoted service path vulnerability that allows local users to potentially execute code with elevated system privileges. [CVSS 7.8 HIGH]

Technical ContextAI

exists in the the component. Avast SecureLine 5.5.522.0 contains an unquoted service path vulnerability that allows local users to potentially execute code with elevated system privileges. Attackers can exploit the unquoted path in the service configuration to inject malicious code that would execute with LocalSystem account permissions during service startup.