Vulnerability-Lookup

GHSA-X73Q-38H3-XG4C

Vulnerability from github – Published: 2026-07-02 15:32 – Updated: 2026-07-02 15:32

Details

A malicious actor with access to the network could exploit a Path Traversal vulnerability found in certain devices running UniFi OS to bypass authentication of such UniFi OS devices or instances.

Severity

8.6 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-54403"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-22"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-02T15:17:03Z",
    "severity": "HIGH"
  },
  "details": "A malicious actor with access to the network could exploit a Path Traversal vulnerability found in certain devices running UniFi OS to bypass authentication of such UniFi OS devices or instances.",
  "id": "GHSA-x73q-38h3-xg4c",
  "modified": "2026-07-02T15:32:12Z",
  "published": "2026-07-02T15:32:12Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-54403"
    },
    {
      "type": "WEB",
      "url": "https://community.ui.com/releases/Security-Advisory-Bulletin-066-066/984eceb3-49c8-4227-942d-671c289b3afc"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-54403 (GCVE-0-2026-54403)

Vulnerability from cvelistv5 – Published: 2026-07-02 14:49 – Updated: 2026-07-02 16:09

Summary

A malicious actor with access to the network could exploit a Path Traversal vulnerability found in certain devices running UniFi OS to bypass authentication of such UniFi OS devices or instances.

Severity

8.6 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-02 16:09 UTC

CWE

CWE-22 - Path Traversal

Assigner

hackerone mitre root

References

1 reference

URL	Tags
https://community.ui.com/releases/Security-Adviso…

Impacted products

12 products

Vendor	Product	Version
Ubiquiti Inc	UniFi OS Server	Affected: 0 , < 5.1.19 (semver)
Ubiquiti Inc	Dream Machines	Affected: 0 , < 5.1.19 (semver)
Ubiquiti Inc	Enterprise Fortress Gateway	Affected: 0 , < 5.1.19 (semver)
Ubiquiti Inc	Dream Wall	Affected: 0 , < 5.1.19 (semver)
Ubiquiti Inc	Dream Routers	Affected: 0 , < 5.1.19 (semver)
Ubiquiti Inc	Express 7	Affected: 0 , < 5.1.19 (semver)
Ubiquiti Inc	Cloud Keys	Affected: 0 , < 5.1.19 (semver)
Ubiquiti Inc	Network Video Recorders	Affected: 0 , < 5.1.19 (semver)
Ubiquiti Inc	Enterprise Video Recorders	Affected: 0 , < 5.1.19 (semver)
Ubiquiti Inc	Cloud Gateways	Affected: 0 , < 5.1.19 (semver)
Ubiquiti Inc	Network Attached Storage	Affected: 0 , < 5.1.19 (semver)
Ubiquiti Inc	Enterprise Firewall Core	Affected: 0 , < 5.1.19 (semver)

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-54403",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-02T16:09:36.129029Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
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        "providerMetadata": {
          "dateUpdated": "2026-07-02T16:09:42.714Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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        },
        {
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              "status": "affected",
              "version": "0",
              "versionType": "semver"
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        },
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          "product": "Cloud Keys",
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          "versions": [
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              "status": "affected",
              "version": "0",
              "versionType": "semver"
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        {
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          "product": "Network Video Recorders",
          "vendor": "Ubiquiti Inc",
          "versions": [
            {
              "lessThan": "5.1.19",
              "status": "affected",
              "version": "0",
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          "product": "Cloud Gateways",
          "vendor": "Ubiquiti Inc",
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              "status": "affected",
              "version": "0",
              "versionType": "semver"
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        },
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          "defaultStatus": "unaffected",
          "product": "Network Attached Storage",
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          "versions": [
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              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        },
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          "product": "Enterprise Firewall Core",
          "vendor": "Ubiquiti Inc",
          "versions": [
            {
              "lessThan": "5.1.19",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
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      "descriptions": [
        {
          "lang": "en",
          "value": "A malicious actor with access to the network could exploit a Path Traversal vulnerability found in certain devices running UniFi OS to bypass authentication of such UniFi OS devices or instances."
        }
      ],
      "metrics": [
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            "baseSeverity": "HIGH",
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        }
      ]
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  "cveMetadata": {
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    "assignerShortName": "hackerone",
    "cveId": "CVE-2026-54403",
    "datePublished": "2026-07-02T14:49:16.633Z",
    "dateReserved": "2026-06-13T15:00:00.604Z",
    "dateUpdated": "2026-07-02T16:09:42.714Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Detection rules are retrieved from Rulezet.

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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.