CVE-2021-47739 - CVE House
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Status published High CVE-2021-47739

Epic Games Easy Anti-Cheat 4.0 Local Privilege Escalation via Unquoted Service Path

Vulnerability Description

Epic Games Easy Anti-Cheat 4.0 contains an unquoted service path vulnerability that allows local non-privileged users to execute arbitrary code with elevated system privileges. Attackers can exploit the service configuration by inserting malicious code in the system root path that would execute with LocalSystem privileges during application startup.

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:

  • LiquidWorm as Gjoko Krstic of Zero Science Lab

References

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Affected Vendor

Affected Software

Easy Anti-Cheat
Vulnerable Versions:
4.0

Timeline

Official Publish: December 23rd, 2025
Last Modified: December 23rd, 2025
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:L/AC:L/PR:N/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