github - ghsa-r6ff-6pwf-xvp7

GHSA-R6FF-6PWF-XVP7

Vulnerability from github – Published: 2025-12-23 21:30 – Updated: 2025-12-23 21:30

Details

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.

Severity ?

8.4 (High)


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

8.5 (High)


                  
                    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

Show details on source website

JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2021-47739"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-428"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-23T20:15:45Z",
    "severity": "HIGH"
  },
  "details": "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.",
  "id": "GHSA-r6ff-6pwf-xvp7",
  "modified": "2025-12-23T21:30:29Z",
  "published": "2025-12-23T21:30:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-47739"
    },
    {
      "type": "WEB",
      "url": "https://www.easy.ac"
    },
    {
      "type": "WEB",
      "url": "https://www.epicgames.com"
    },
    {
      "type": "WEB",
      "url": "https://www.exploit-db.com/exploits/49841"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/epic-games-easy-anti-cheat-local-privilege-escalation-via-unquoted-service-path"
    },
    {
      "type": "WEB",
      "url": "https://www.zeroscience.mk/en/vulnerabilities/ZSL-2021-5652.php"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2021-47739 (GCVE-0-2021-47739)

Vulnerability from cvelistv5 – Published: 2025-12-23 19:34 – Updated: 2025-12-23 21:37

Title

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

Summary

Severity ?

8.5 (High)


                        
                          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

8.4 (High)


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

CWE

CWE-428 - Unquoted Search Path or Element

Assigner

VulnCheck

References

URL

Tags

	https://www.exploit-db.com/exploits/49841	exploit
	https://www.epicgames.com	product
	https://www.easy.ac	product
	https://www.zeroscience.mk/en/vulnerabilities/ZSL…	third-party-advisory
	https://www.vulncheck.com/advisories/epic-games-e…	third-party-advisory

Impacted products

	Vendor	Product	Version
	Epic Games	Easy Anti-Cheat	Affected: 4.0

Credits

LiquidWorm as Gjoko Krstic of Zero Science Lab

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-47739",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-12-23T21:37:28.367364Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
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        ],
        "providerMetadata": {
          "dateUpdated": "2025-12-23T21:37:45.785Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Easy Anti-Cheat",
          "vendor": "Epic Games",
          "versions": [
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              "version": "4.0"
            }
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        }
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          "type": "finder",
          "value": "LiquidWorm as Gjoko Krstic of Zero Science Lab"
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      "datePublic": "2021-05-04T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "LOCAL",
            "baseScore": 8.5,
            "baseSeverity": "HIGH",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "LOW",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
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            "vulnerabilityResponseEffort": "NOT_DEFINED"
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            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
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      "references": [
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          "name": "ExploitDB-49841",
          "tags": [
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          "tags": [
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          "tags": [
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          "url": "https://www.easy.ac"
        },
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          "tags": [
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        },
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    "datePublished": "2025-12-23T19:34:10.825Z",
    "dateReserved": "2025-12-23T13:24:04.581Z",
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}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-R6FF-6PWF-XVP7

CVE-2021-47739 (GCVE-0-2021-47739)

Tags

Sightings

Nomenclature