Vulnerability-Lookup

GHSA-R9CJ-Q2HJ-HFQ9

Vulnerability from github – Published: 2022-05-24 17:24 – Updated: 2025-10-22 00:31

Details

An improper authentication vulnerability in SSL VPN in FortiOS 6.4.0, 6.2.0 to 6.2.3, 6.0.9 and below may result in a user being able to log in successfully without being prompted for the second factor of authentication (FortiToken) if they changed the case of their username.

Severity

9.8 (Critical)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2020-12812"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-178",
      "CWE-287"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2020-07-24T23:15:00Z",
    "severity": "HIGH"
  },
  "details": "An improper authentication vulnerability in SSL VPN in FortiOS 6.4.0, 6.2.0 to 6.2.3, 6.0.9 and below may result in a user being able to log in successfully without being prompted for the second factor of authentication (FortiToken) if they changed the case of their username.",
  "id": "GHSA-r9cj-q2hj-hfq9",
  "modified": "2025-10-22T00:31:56Z",
  "published": "2022-05-24T17:24:20Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-12812"
    },
    {
      "type": "WEB",
      "url": "https://fortiguard.com/psirt/FG-IR-19-283"
    },
    {
      "type": "WEB",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-12812"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2020-12812 (GCVE-0-2020-12812)

Vulnerability from cvelistv5 – Published: 2020-07-24 22:28 – Updated: 2026-10-01 20:30

Summary

Severity

7.5 (High)


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

SSVC

Exploitation: active Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-12 03:55 UTC

CWE

Improper Access Control
CWE-287 - Improper Authentication

Assigner

fortinet mitre root Scorecard

References

2 references

URL	Tags
https://fortiguard.com/psirt/FG-IR-19-283	x_refsource_MISC
https://www.cisa.gov/known-exploited-vulnerabilit…	government-resource

Impacted products

1 product

Vendor	Product	Version
n/a	Fortinet FortiOS	Affected: FortiOS 6.4.0, 6.2.0 to 6.2.3, 6.0.9 and below

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JSON

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{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T12:04:22.855Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://fortiguard.com/psirt/FG-IR-19-283"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 7.5,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2020-12812",
                "options": [
                  {
                    "Exploitation": "active"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-12T03:55:19.062068Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          },
          {
            "other": {
              "content": {
                "dateAdded": "2021-11-03",
                "reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-12812"
              },
              "type": "kev"
            }
          }
        ],
        "problemTypes": [
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            "descriptions": [
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        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-01T20:30:43.171Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "government-resource"
            ],
            "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-12812"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Fortinet FortiOS",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "FortiOS 6.4.0, 6.2.0 to 6.2.3, 6.0.9 and below"
            }
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        }
      ],
      "problemTypes": [
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          "descriptions": [
            {
              "description": "Improper Access Control",
              "lang": "en",
              "type": "text"
            }
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      "providerMetadata": {
        "dateUpdated": "2020-07-24T22:28:43.000Z",
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      "references": [
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          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://fortiguard.com/psirt/FG-IR-19-283"
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      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "psirt@fortinet.com",
          "ID": "CVE-2020-12812",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "Fortinet FortiOS",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "FortiOS 6.4.0, 6.2.0 to 6.2.3, 6.0.9 and below"
                          }
                        ]
                      }
                    }
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                },
                "vendor_name": "n/a"
              }
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            }
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    "dateReserved": "2020-05-12T00:00:00.000Z",
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    "state": "PUBLISHED"
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}

Sightings

Author	Source	Type	Date	Other

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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GHSA-R9CJ-Q2HJ-HFQ9

CVE-2020-12812 (GCVE-0-2020-12812)

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