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Security advisory

Type: advisorySources: OSVCVE: CVE-2020-24356

`cloudflared` versions prior to 2020.8.1 contain a local privilege escalation vulnerability on Windows systems. When run on a Windows system, `cloudflared` searches for configuration files which could be abused by a malicious entity to execute commands as a privileged user. Version 2020.8.1 fixes this issue.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2020-24356
Confirmed fixed CVEs
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Updated in this feed
31 Oct 2026, 11:06 UTC · Revision 1

Source evidence

CVE-2020-24356

core-osv · Original source

Published 2 Oct 2020, 15:15 UTC

`cloudflared` versions prior to 2020.8.1 contain a local privilege escalation vulnerability on Windows systems. When run on a Windows system, `cloudflared` searches for configuration files which could be abused by a malicious entity to execute commands as a privileged user. Version 2020.8.1 fixes this issue.

osv:CVE-2020-24356
Complete source record
{
  "id": "21db1bfdae045c54c548714052228451f96698c1e36a407280109f1911bae2d4",
  "url": "https://osv.dev/vulnerability/CVE-2020-24356",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-24356",
    "summary": "`cloudflared` versions prior to 2020.8.1 contain a local privilege escalation vulnerability on Windows systems. When run on a Windows system, `cloudflared` searches for configuration files which could be abused by a malicious entity to execute commands as a privileged user. Version 2020.8.1 fixes this issue.",
    "evidence": "osv:CVE-2020-24356",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2020-24356",
      "aliases": [
        "CVE-2020-24356",
        "GHSA-hgwp-4vp4-qmm2",
        "GO-2022-0845"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/cloudflare/cloudflared",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "9323844ea773b1444460fa09295ab8c01a88d97e"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:cloudflare:cloudflared:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "2020.8.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "2020.8.0",
            "2020.7.4",
            "2020.7.3",
            "2020.7.2",
            "2020.7.1",
            "2020.7.0",
            "2020.6.6",
            "2020.6.5",
            "2020.6.4",
            "2020.6.3",
            "2020.6.2",
            "2020.6.1",
            "2020.6.0",
            "2020.5.1",
            "2020.5.0",
            "2020.4.0",
            "2020.3.2",
            "2020.3.1",
            "2020.3.0",
            "2020.2.1",
            "2020.2.0",
            "2019.12.0",
            "2019.11.3",
            "2019.11.2",
            "2019.11.0",
            "2019.10.4",
            "2019.10.3",
            "2019.10.2",
            "2019.10.1",
            "2019.10.0",
            "2019.9.2",
            "2019.9.1",
            "2019.9.0",
            "2019.8.4",
            "2019.8.3",
            "2019.8.1",
            "2019.8.0",
            "2019.7.0",
            "2019.6.0",
            "2019.5.0",
            "2019.4.1",
            "2019.4.0",
            "2019.3.2",
            "2019.3.1",
            "2019.3.0",
            "2019.2.1",
            "2019.2.0",
            "2019.1.0",
            "2018.12.1",
            "2018.12.0",
            "2018.11.0",
            "2018.10.5",
            "2018.10.3",
            "2018.10.2",
            "2018.10.1",
            "2018.10.0",
            "2018.8.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-24356.json"
          }
        }
      ],
      "modified": "2026-10-20T10:52:51.840899252Z",
      "provider": "osv",
      "references": [
        "https://github.com/cloudflare/cloudflared/security/advisories/GHSA-hgwp-4vp4-qmm2"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-24356",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 383968,
  "published_at": "2020-10-02T15:15:12.483+00:00"
}