Vulnerability-Lookup

WID-SEC-W-2026-3414

Vulnerability from csaf_certbund - Published: 2026-09-16 22:00 - Updated: 2026-10-21 22:00

Summary

NoMachine: Mehrere Schwachstellen

Severity

Hoch

Notes

Das BSI ist als Anbieter für die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch dafür verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgfältig im Einzelfall zu prüfen.

Produktbeschreibung: NoMachine ist eine plattformübergreifende Softwareanwendung für Remote-Desktop-Zugriff und -Verwaltung.

Angriff: Ein Angreifer kann mehrere Schwachstellen in NoMachine ausnutzen, um beliebigen Programmcode auszuführen, einen Denial of Service zu verursachen, Sicherheitsmaßnahmen zu umgehen oder seine Privilegien zu erweitern.

Betroffene Betriebssysteme: - Linux - Sonstiges - UNIX - Windows

CVE-2026-92208

Affected products

Known affected 3 products

Product	Identifier	Version	Remediation
NoMachine NoMachine <10.1.7 NoMachine / NoMachine		<10.1.7
NoMachine NoMachine <9.9.6 NoMachine / NoMachine		<9.9.6
NoMachine NoMachine <8.27.1 NoMachine / NoMachine		<8.27.1

CVE-2026-92209

Affected products

Known affected 3 products, the same list as for CVE-2026-92208

CVE-2026-92210

Affected products

Known affected 3 products, the same list as for CVE-2026-92208

References

8 references

URL	Category
https://wid.cert-bund.de/.well-known/csaf/white/2…	self
https://wid.cert-bund.de/portal/wid/securityadvis…	self
https://kb.nomachine.com/TR08X11921	external
https://kb.nomachine.com/TR08X11930	external
https://kb.nomachine.com/TR08X11934	external
https://www.zerodayinitiative.com/advisories/ZDI-…	external
https://www.zerodayinitiative.com/advisories/ZDI-…	external
https://www.zerodayinitiative.com/advisories/ZDI-…	external

JSON

To clipboard

{
  "document": {
    "aggregate_severity": {
      "text": "hoch"
    },
    "category": "csaf_base",
    "csaf_version": "2.0",
    "distribution": {
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "de-DE",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "Das BSI ist als Anbieter f\u00fcr die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch daf\u00fcr verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgf\u00e4ltig im Einzelfall zu pr\u00fcfen."
      },
      {
        "category": "description",
        "text": "NoMachine ist eine plattform\u00fcbergreifende Softwareanwendung f\u00fcr Remote-Desktop-Zugriff und -Verwaltung.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein Angreifer kann mehrere Schwachstellen in NoMachine ausnutzen, um beliebigen Programmcode auszuf\u00fchren, einen Denial of Service zu verursachen, Sicherheitsma\u00dfnahmen zu umgehen oder seine Privilegien zu erweitern.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- Linux\n- Sonstiges\n- UNIX\n- Windows",
        "title": "Betroffene Betriebssysteme"
      }
    ],
    "publisher": {
      "category": "other",
      "contact_details": "csaf-provider@cert-bund.de",
      "name": "Bundesamt f\u00fcr Sicherheit in der Informationstechnik",
      "namespace": "https://www.bsi.bund.de"
    },
    "references": [
      {
        "category": "self",
        "summary": "WID-SEC-W-2026-3414 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-3414.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2026-3414 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-3414"
      },
      {
        "category": "external",
        "summary": "NoMachine Support vom 2026-09-16",
        "url": "https://kb.nomachine.com/TR08X11921"
      },
      {
        "category": "external",
        "summary": "NoMachine Support vom 2026-09-16",
        "url": "https://kb.nomachine.com/TR08X11930"
      },
      {
        "category": "external",
        "summary": "NoMachine Support vom 2026-09-16",
        "url": "https://kb.nomachine.com/TR08X11934"
      },
      {
        "category": "external",
        "summary": "ZDI Advisory vom 2026-09-16",
        "url": "https://www.zerodayinitiative.com/advisories/ZDI-26-710/"
      },
      {
        "category": "external",
        "summary": "ZDI Advisory vom 2026-09-16",
        "url": "https://www.zerodayinitiative.com/advisories/ZDI-26-711/"
      },
      {
        "category": "external",
        "summary": "ZDI Advisory vom 2026-09-16",
        "url": "https://www.zerodayinitiative.com/advisories/ZDI-26-712/"
      }
    ],
    "source_lang": "en-US",
    "title": "NoMachine: Mehrere Schwachstellen",
    "tracking": {
      "current_release_date": "2026-10-21T22:00:00.000+00:00",
      "generator": {
        "date": "2026-10-22T06:05:58.707+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.6.0"
        }
      },
      "id": "WID-SEC-W-2026-3414",
      "initial_release_date": "2026-09-16T22:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2026-09-16T22:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        },
        {
          "date": "2026-10-21T22:00:00.000+00:00",
          "number": "2",
          "summary": "Referenz(en) aufgenommen: EUVD-2026-107399, EUVD-2026-107398, EUVD-2026-107397"
        }
      ],
      "status": "final",
      "version": "2"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c10.1.7",
                "product": {
                  "name": "NoMachine NoMachine \u003c10.1.7",
                  "product_id": "T059708"
                }
              },
              {
                "category": "product_version",
                "name": "10.1.7",
                "product": {
                  "name": "NoMachine NoMachine 10.1.7",
                  "product_id": "T059708-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:nomachine:nomachine:10.1.7"
                  }
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003c9.9.6",
                "product": {
                  "name": "NoMachine NoMachine \u003c9.9.6",
                  "product_id": "T059709"
                }
              },
              {
                "category": "product_version",
                "name": "9.9.6",
                "product": {
                  "name": "NoMachine NoMachine 9.9.6",
                  "product_id": "T059709-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:nomachine:nomachine:9.9.6"
                  }
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003c8.27.1",
                "product": {
                  "name": "NoMachine NoMachine \u003c8.27.1",
                  "product_id": "T059710"
                }
              },
              {
                "category": "product_version",
                "name": "8.27.1",
                "product": {
                  "name": "NoMachine NoMachine 8.27.1",
                  "product_id": "T059710-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:nomachine:nomachine:8.27.1"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "NoMachine"
          }
        ],
        "category": "vendor",
        "name": "NoMachine"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-92208",
      "product_status": {
        "known_affected": [
          "T059708",
          "T059709",
          "T059710"
        ]
      },
      "release_date": "2026-09-16T22:00:00.000+00:00",
      "title": "CVE-2026-92208"
    },
    {
      "cve": "CVE-2026-92209",
      "product_status": {
        "known_affected": [
          "T059708",
          "T059709",
          "T059710"
        ]
      },
      "release_date": "2026-09-16T22:00:00.000+00:00",
      "title": "CVE-2026-92209"
    },
    {
      "cve": "CVE-2026-92210",
      "product_status": {
        "known_affected": [
          "T059708",
          "T059709",
          "T059710"
        ]
      },
      "release_date": "2026-09-16T22:00:00.000+00:00",
      "title": "CVE-2026-92210"
    }
  ]
}

CVE-2026-92208 (GCVE-0-2026-92208)

Vulnerability from cvelistv5 – Published: 2026-10-21 17:16 – Updated: 2026-10-21 17:16

Title

NoMachine mDNS Heap-based Buffer Overflow Remote Code Execution Vulnerability

Summary

NoMachine mDNS Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NoMachine. Authentication is not required to exploit this vulnerability. The specific flaw exists within the parsing of mDNS resource records. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the service account. Was ZDI-CAN-30982.

Severity

8.8 (High)


                        
                          CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-122 - Heap-based Buffer Overflow

Assigner

zdi CNA under the mitre root

CNA scorecard C 73/100 over 121 records in the last 180 days details

References

1 reference

URL	Tags
https://www.zerodayinitiative.com/advisories/ZDI-…	x_research-advisory

Impacted products

1 product

Vendor	Product	Version
NoMachine	NoMachine	Affected: 9.8.2_1

Date Public

2026-09-16 23:51

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unknown",
          "product": "NoMachine",
          "vendor": "NoMachine",
          "versions": [
            {
              "status": "affected",
              "version": "9.8.2_1"
            }
          ]
        }
      ],
      "dateAssigned": "2026-09-15T18:16:14.855Z",
      "datePublic": "2026-09-16T23:51:02.971Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "NoMachine mDNS Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NoMachine. Authentication is not required to exploit this vulnerability.\n\nThe specific flaw exists within the parsing of mDNS resource records. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the service account. Was ZDI-CAN-30982."
        }
      ],
      "metrics": [
        {
          "cvssV3_0": {
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.0"
          },
          "format": "CVSS"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-122",
              "description": "CWE-122: Heap-based Buffer Overflow",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-21T17:16:04.507Z",
        "orgId": "99f1926a-a320-47d8-bbb5-42feb611262e",
        "shortName": "zdi"
      },
      "references": [
        {
          "name": "ZDI-26-710",
          "tags": [
            "x_research-advisory"
          ],
          "url": "https://www.zerodayinitiative.com/advisories/ZDI-26-710/"
        }
      ],
      "source": {
        "lang": "en",
        "value": "Tobias Vonmetz"
      },
      "title": "NoMachine mDNS Heap-based Buffer Overflow Remote Code Execution Vulnerability"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "99f1926a-a320-47d8-bbb5-42feb611262e",
    "assignerShortName": "zdi",
    "cveId": "CVE-2026-92208",
    "datePublished": "2026-10-21T17:16:04.507Z",
    "dateReserved": "2026-09-15T18:16:14.822Z",
    "dateUpdated": "2026-10-21T17:16:04.507Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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

Vulnerability from cvelistv5 – Published: 2026-10-21 17:16 – Updated: 2026-10-21 17:16

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

CWE-331 - Insufficient Entropy

Assigner

zdi CNA under the mitre root

CNA scorecard C 73/100 over 121 records in the last 180 days details

References

1 reference

URL	Tags
https://www.zerodayinitiative.com/advisories/ZDI-…	x_research-advisory

Impacted products

1 product

Vendor	Product	Version
NoMachine	NoMachine	Affected: 9.7.3

Date Public

2026-09-16 23:51

Show details on NVD website

JSON

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": [
        {
          "cvssV3_0": {
            "baseScore": 7.8,
            "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"
}

CVE-2026-92210 (GCVE-0-2026-92210)

Vulnerability from cvelistv5 – Published: 2026-10-21 17:16 – Updated: 2026-10-21 17:16

Title

NoMachine nxhtd Server-Side Request Forgery Information Disclosure Vulnerability

Summary

NoMachine nxhtd Server-Side Request Forgery Information Disclosure Vulnerability. This vulnerability allows remote attackers to initiate arbitrary server-side requests on affected installations of NoMachine. Authentication is not required to exploit this vulnerability. The specific flaw exists within the web service, which listens on UDP port 4443 by default. The issue results from the lack of proper validation of a URI prior to accessing resources. An attacker can leverage this vulnerability to initiate requests in the context of the service account. Was ZDI-CAN-31619.

Severity

7.2 (High)


                        
                          CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

CWE

CWE-918 - Server-Side Request Forgery (SSRF)

Assigner

zdi CNA under the mitre root

CNA scorecard C 73/100 over 121 records in the last 180 days details

References

1 reference

URL	Tags
https://www.zerodayinitiative.com/advisories/ZDI-…	x_research-advisory

Impacted products

1 product

Vendor	Product	Version
NoMachine	NoMachine	Affected: nomachine_9.8.2_1_amd64.deb

Date Public

2026-09-16 23:51

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unknown",
          "product": "NoMachine",
          "vendor": "NoMachine",
          "versions": [
            {
              "status": "affected",
              "version": "nomachine_9.8.2_1_amd64.deb"
            }
          ]
        }
      ],
      "dateAssigned": "2026-09-15T18:17:46.196Z",
      "datePublic": "2026-09-16T23:51:24.261Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "NoMachine nxhtd Server-Side Request Forgery Information Disclosure Vulnerability. This vulnerability allows remote attackers to initiate arbitrary server-side requests on affected installations of NoMachine. Authentication is not required to exploit this vulnerability.\n\nThe specific flaw exists within the web service, which listens on UDP port 4443 by default. The issue results from the lack of proper validation of a URI prior to accessing resources. An attacker can leverage this vulnerability to initiate requests in the context of the service account. Was ZDI-CAN-31619."
        }
      ],
      "metrics": [
        {
          "cvssV3_0": {
            "baseScore": 7.2,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N",
            "version": "3.0"
          },
          "format": "CVSS"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-918",
              "description": "CWE-918: Server-Side Request Forgery (SSRF)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-21T17:16:22.236Z",
        "orgId": "99f1926a-a320-47d8-bbb5-42feb611262e",
        "shortName": "zdi"
      },
      "references": [
        {
          "name": "ZDI-26-712",
          "tags": [
            "x_research-advisory"
          ],
          "url": "https://www.zerodayinitiative.com/advisories/ZDI-26-712/"
        }
      ],
      "source": {
        "lang": "en",
        "value": "Niels Pfau (Mantodea Security GmbH)"
      },
      "title": "NoMachine nxhtd Server-Side Request Forgery Information Disclosure Vulnerability"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "99f1926a-a320-47d8-bbb5-42feb611262e",
    "assignerShortName": "zdi",
    "cveId": "CVE-2026-92210",
    "datePublished": "2026-10-21T17:16:22.236Z",
    "dateReserved": "2026-09-15T18:17:46.163Z",
    "dateUpdated": "2026-10-21T17:16:22.236Z",
    "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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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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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WID-SEC-W-2026-3414

CVE-2026-92208 (GCVE-0-2026-92208)

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

CVE-2026-92210 (GCVE-0-2026-92210)

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