NCSC-2026-0179

Vulnerability from csaf_ncscnl - Published: 2026-06-08 14:29 - Updated: 2026-06-08 14:29
Summary
Kwetsbaarheden verholpen in Check Point Remote and Mobile Access VPN-producten
Notes
The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this page to enhance access to its information and security advisories. The use of this security advisory is subject to the following terms and conditions: NCSC-NL makes every reasonable effort to ensure that the content of this page is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or continuous keeping up-to-date. The information contained in this security advisory is intended solely for the purpose of providing general information to professional users. No rights can be derived from the information provided therein. NCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of this security advisory. This includes damage resulting from the inaccuracy of incompleteness of the information contained in the advisory. This security advisory is subject to Dutch law. All disputes related to or arising from the use of this advisory will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings.
Feiten: Check Point heeft kwetsbaarheden verholpen in Remote and Mobile Access VPN-producten, specifiek voor implementaties die gebruikmaken van het IKEv1 key exchange protocol.
Interpretaties: Er zijn twee kwetsbaarheden vastgesteld in Check Point Security Gateways en Remote Access VPN-omgevingen die gebruikmaken van het verouderde IKEv1-protocol. De kwetsbaarheden CVE-2026-50751 en CVE-2026-50752 treffen VPN-authenticatie en certificaatvalidatie. Deze kwetsbaarheden stellen aanvallers in staat om zonder geldige authenticatie toegang te verkrijgen tot VPN-omgevingen. De kwetsbaarheid CVE-2026-50751 is als zero-day misbruikt. Volgens Check Point zou in één geval ook ransomware zijn geplaatst na dit misbruik. Het eerste gedetecteerde misbruik dateert van 7 mei. Het IKEv1-protocol is een verouderd protocol dat nog wel wordt gebruikt bij dit soort implementaties. Het NCSC-NL verwacht dat er op korte termijn grootschalig misbruik zal plaatsvinden en roept organisaties op om de advisory van Check Point op te volgen. Ook roept het NCSC-NL organisaties op om de IoC’s van Check Point te controleren als binnen de organisatie betreffende producten worden gebruikt waarin IKEv1 is ingeschakeld.
Interpretaties: IOCs 45.77.149[.]152 209.182.225[.]136 38.60.157[.]139 162.33.177[.]101 45.76.26[.]42 144.208.127[.]155 38.54.88[.]201 38.54.107[.]167 66.42.99[.]200 52fda5c1b9704544f32ee98d9060e689 51d39aa39478beeac94f2d12f682ecce
Oplossingen: Check Point heeft hotfixes uitgebracht om de kwetsbaarheden te verhelpen. Zie bijgevoegde referenties voor meer informatie.
Dreigingsinformatie: IOCs 45.77.149[.]152 209.182.225[.]136 38.60.157[.]139 162.33.177[.]101 45.76.26[.]42 144.208.127[.]155 38.54.88[.]201 38.54.107[.]167 66.42.99[.]200 52fda5c1b9704544f32ee98d9060e689 51d39aa39478beeac94f2d12f682ecce
Kans: high
Schade: high
CWE-287: Improper Authentication
CWE-295: Improper Certificate Validation
CVE-2026-50751

A logic flaw in the deprecated IKEv1 key exchange for Remote and Mobile Access certificate validation allows unauthenticated attackers to bypass user authentication and gain remote VPN access without valid credentials.

Affected products
Product Identifier Version Remediation
vers:unknown/*
checkpoint / Quantum Security Gateway
 vers:unknown/*
vers:unknown/*
checkpoint / Spark Firewalls
 vers:unknown/*
CVE-2026-50752

A vulnerability in the certificate validation process of the deprecated IKEv1 key exchange protocol allows man-in-the-middle attackers to bypass certificate checks in VPN site-to-site connections, risking interception or modification of VPN traffic.

7.4 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
CWE-295 - Improper Certificate Validation
Affected products
Product Identifier Version Remediation
vers:unknown/*
checkpoint / Quantum Security Gateway
 vers:unknown/*
vers:unknown/*
checkpoint / Spark Firewalls
 vers:unknown/*
References
To clipboard 

{
  "document": {
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "tlp": {
        "label": "WHITE"
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    "lang": "nl",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this page to enhance access to its information and security advisories. The use of this security advisory is subject to the following terms and conditions:\n\n    NCSC-NL makes every reasonable effort to ensure that the content of this page is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or continuous keeping up-to-date. The information contained in this security advisory is intended solely for the purpose of providing general information to professional users. No rights can be derived from the information provided therein.\n\n    NCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of this security advisory. This includes damage resulting from the inaccuracy of incompleteness of the information contained in the advisory.\n    This security advisory is subject to Dutch law. All disputes related to or arising from the use of this advisory will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings."
      },
      {
        "category": "description",
        "text": "Check Point heeft kwetsbaarheden verholpen in Remote and Mobile Access VPN-producten, specifiek voor implementaties die gebruikmaken van het IKEv1 key exchange protocol.",
        "title": "Feiten"
      },
      {
        "category": "description",
        "text": "Er zijn twee kwetsbaarheden vastgesteld in Check Point Security Gateways en Remote Access VPN-omgevingen die gebruikmaken van het verouderde IKEv1-protocol. De kwetsbaarheden CVE-2026-50751 en CVE-2026-50752 treffen VPN-authenticatie en certificaatvalidatie. Deze kwetsbaarheden stellen aanvallers in staat om zonder geldige authenticatie toegang te verkrijgen tot VPN-omgevingen.\n\nDe kwetsbaarheid CVE-2026-50751 is als zero-day misbruikt. Volgens Check Point zou in \u00e9\u00e9n geval ook ransomware zijn geplaatst na dit misbruik. Het eerste gedetecteerde misbruik dateert van 7 mei. Het IKEv1-protocol is een verouderd protocol dat nog wel wordt gebruikt bij dit soort implementaties. Het NCSC-NL verwacht dat er op korte termijn grootschalig misbruik zal plaatsvinden en roept organisaties op om de advisory van Check Point op te volgen. Ook roept het NCSC-NL organisaties op om de IoC\u2019s van Check Point te controleren als binnen de organisatie betreffende producten worden gebruikt waarin IKEv1 is ingeschakeld.\n",
        "title": "Interpretaties"
      },
      {
        "category": "description",
        "text": "IOCs\n45.77.149[.]152\n209.182.225[.]136\n38.60.157[.]139\n162.33.177[.]101\n45.76.26[.]42\n144.208.127[.]155\n38.54.88[.]201\n38.54.107[.]167\n66.42.99[.]200\n\n52fda5c1b9704544f32ee98d9060e689\n\n51d39aa39478beeac94f2d12f682ecce",
        "title": "Interpretaties"
      },
      {
        "category": "description",
        "text": "Check Point heeft hotfixes uitgebracht om de kwetsbaarheden te verhelpen. Zie bijgevoegde referenties voor meer informatie.",
        "title": "Oplossingen"
      },
      {
        "category": "description",
        "text": "IOCs\n45.77.149[.]152\n209.182.225[.]136\n38.60.157[.]139\n162.33.177[.]101\n45.76.26[.]42\n144.208.127[.]155\n38.54.88[.]201\n38.54.107[.]167\n66.42.99[.]200\n\n52fda5c1b9704544f32ee98d9060e689\n\n51d39aa39478beeac94f2d12f682ecce",
        "title": "Dreigingsinformatie"
      },
      {
        "category": "general",
        "text": "high",
        "title": "Kans"
      },
      {
        "category": "general",
        "text": "high",
        "title": "Schade"
      },
      {
        "category": "general",
        "text": "Improper Authentication",
        "title": "CWE-287"
      },
      {
        "category": "general",
        "text": "Improper Certificate Validation",
        "title": "CWE-295"
      }
    ],
    "publisher": {
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      "contact_details": "cert@ncsc.nl",
      "name": "Nationaal Cyber Security Centrum",
      "namespace": "https://www.ncsc.nl/"
    },
    "references": [
      {
        "category": "external",
        "summary": "Reference",
        "url": "https://blog.checkpoint.com/security/check-point-releases-important-hotfix-for-vulnerabilities-in-deprecated-ikev1-vpn-protocol"
      },
      {
        "category": "external",
        "summary": "Reference",
        "url": "https://support.checkpoint.com/results/sk/sk185033"
      },
      {
        "category": "external",
        "summary": "Reference",
        "url": "https://support.checkpoint.com/results/sk/sk185035"
      }
    ],
    "title": "Kwetsbaarheden verholpen in Check Point Remote and Mobile Access VPN-producten",
    "tracking": {
      "current_release_date": "2026-06-08T14:29:06.810408Z",
      "generator": {
        "date": "2025-08-04T16:30:00Z",
        "engine": {
          "name": "V.A.",
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      "id": "NCSC-2026-0179",
      "initial_release_date": "2026-06-08T14:29:06.810408Z",
      "revision_history": [
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          "date": "2026-06-08T14:29:06.810408Z",
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    "branches": [
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            "category": "product_name",
            "name": "Spark Firewalls"
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        ],
        "category": "vendor",
        "name": "checkpoint"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-50751",
      "notes": [
        {
          "category": "description",
          "text": "A logic flaw in the deprecated IKEv1 key exchange for Remote and Mobile Access certificate validation allows unauthenticated attackers to bypass user authentication and gain remote VPN access without valid credentials.",
          "title": "Summary"
        }
      ],
      "product_status": {
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          "CSAFPID-2"
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        }
      ],
      "title": "CVE-2026-50751"
    },
    {
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          "category": "other",
          "text": "Improper Certificate Validation",
          "title": "CWE-295"
        },
        {
          "category": "description",
          "text": "A vulnerability in the certificate validation process of the deprecated IKEv1 key exchange protocol allows man-in-the-middle attackers to bypass certificate checks in VPN site-to-site connections, risking interception or modification of VPN traffic.",
          "title": "Summary"
        }
      ],
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          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-50752.json"
        }
      ],
      "scores": [
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            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
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      "title": "CVE-2026-50752"
    }
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}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

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