Unquoted Service Path Vulnerability in Outline Service by Outline
CVE-2020-37030

8.5HIGH

Key Information:

Vendor

Getoutline

Status
Outline Service
Vendor
CVE Published:
30 January 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2020-37030?

The Outline Service version 1.3.3 contains a security flaw involving an unquoted service path. This vulnerability permits local users to exploit the unquoted binary path located in C:\Program Files (x86)\Outline, which could allow malicious code to be injected and executed with elevated privileges during service startup. Such an exploit can lead to unauthorized actions conducted at the LocalSystem level.

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Affected Version(s)

Outline Service 0 <= 1.3.3

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-2020-37030 - Proof of Concept

References

https://www.exploit-db.com/exploits/48414
exploit
https://getoutline.org/vi/home
product
https://www.vulncheck.com/advisories/outline-service-outl...
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

Minh Tuan - SunCSR
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