CVE-2026-92209 (GCVE-0-2026-92209)

Vulnerability from cvelistv5 – Published: 2026-10-21 17:16 – Updated: 2026-10-21 17:16
VLAI
Title
NoMachine Redis Improper Authentication Local Privilege Escalation Vulnerability
Summary
NoMachine Redis Improper Authentication Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of NoMachine. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the authentication mechanism controlling access to the Redis database. The issue results from using insufficient entropy in the generation of credentials. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the service account. Was ZDI-CAN-30984.
Severity
7.8 (High)
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
Assigner
zdi CNA under the mitre root
CNA scorecard C 73/100 over 121 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
NoMachine NoMachine Affected: 9.7.3
guessed Create a notification for this product.
Date Public
2026-09-16 23:51
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unknown",
          "product": "NoMachine",
          "vendor": "NoMachine",
          "versions": [
            {
              "status": "affected",
              "version": "9.7.3"
            }
          ]
        }
      ],
      "dateAssigned": "2026-09-15T18:16:22.177Z",
      "datePublic": "2026-09-16T23:51:14.665Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "NoMachine Redis Improper Authentication Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of NoMachine. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.\n\nThe specific flaw exists within the authentication mechanism controlling access to the Redis database. The issue results from using insufficient entropy in the generation of credentials. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the service account. Was ZDI-CAN-30984."
        }
      ],
      "metrics": [
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            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.0"
          },
          "format": "CVSS"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-331",
              "description": "CWE-331: Insufficient Entropy",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-21T17:16:13.249Z",
        "orgId": "99f1926a-a320-47d8-bbb5-42feb611262e",
        "shortName": "zdi"
      },
      "references": [
        {
          "name": "ZDI-26-711",
          "tags": [
            "x_research-advisory"
          ],
          "url": "https://www.zerodayinitiative.com/advisories/ZDI-26-711/"
        }
      ],
      "source": {
        "lang": "en",
        "value": "Tobias Vonmetz"
      },
      "title": "NoMachine Redis Improper Authentication Local Privilege Escalation Vulnerability"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "99f1926a-a320-47d8-bbb5-42feb611262e",
    "assignerShortName": "zdi",
    "cveId": "CVE-2026-92209",
    "datePublished": "2026-10-21T17:16:13.249Z",
    "dateReserved": "2026-09-15T18:16:22.143Z",
    "dateUpdated": "2026-10-21T17:16:13.249Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": {
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              {
                "defaultStatus": "unknown",
                "product": "NoMachine",
                "vendor": "NoMachine",
                "versions": [
                  {
                    "status": "affected",
                    "version": "9.7.3"
                  }
                ]
              }
            ],
            "source": "zdi-disclosures@trendmicro.com"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "NoMachine Redis Improper Authentication Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of NoMachine. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.\n\nThe specific flaw exists within the authentication mechanism controlling access to the Redis database. The issue results from using insufficient entropy in the generation of credentials. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the service account. Was ZDI-CAN-30984."
          }
        ],
        "id": "CVE-2026-92209",
        "lastModified": "2026-10-21T18:17:31.597",
        "metrics": {
          "cvssMetricV30": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 7.8,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.0"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 5.9,
              "source": "zdi-disclosures@trendmicro.com",
              "type": "Secondary"
            }
          ]
        },
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        "references": [
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            "source": "zdi-disclosures@trendmicro.com",
            "url": "https://www.zerodayinitiative.com/advisories/ZDI-26-711/"
          }
        ],
        "sourceIdentifier": "zdi-disclosures@trendmicro.com",
        "vulnStatus": "Received",
        "weaknesses": [
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            "description": [
              {
                "lang": "en",
                "value": "CWE-331"
              }
            ],
            "source": "zdi-disclosures@trendmicro.com",
            "type": "Primary"
          }
        ]
      }
    }
  }
}



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