CVE-2023-54331 - CVE House
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Status published High CVE-2023-54331

Outline 1.6.0 - Unquoted Service Path

Vulnerability Description

Outline 1.6.0 contains an unquoted service path vulnerability that allows local attackers to potentially execute arbitrary code with elevated system privileges. Attackers can exploit the unquoted service path in the OutlineService executable to inject malicious code that will be executed with LocalSystem permissions.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Milad Karimi (Ex3ptionaL)

References

More from Getoutline

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CVE-2020-37030
Outline Service 1.3.3 - 'Outline Service ' Unquoted Service Path
High 8.5

Affected Vendor

Affected Software

Outline
Vulnerable Versions:
1.6.0

Timeline

Official Publish: January 13th, 2026
Last Modified: March 5th, 2026
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weaknesses (CWE)

CWE-428

MITRE ATT&CK TTPs

T1574 Hijack Execution Flow
Privilege Escalation
T1036 Masquerading
Defense Evasion
T1543 Create or Modify System Process
Persistence
T1059 Command and Scripting Interpreter
Execution
T1569 System Services
Execution