Vulnerability-Lookup

CVE-2026-50751 (GCVE-0-2026-50751)

Vulnerability from cvelistv5 – Published: 2026-06-08 11:07 – Updated: 2026-06-08 19:58

CISA KEV CIRCL

Title

User Authentication Bypass in VPN Remote Access and Mobile Access

Summary

A logic flow weakness in Remote Access and Mobile Access certificate validation in deprecated IKEv1 key exchange allows an unauthenticated remote attacker to bypass user authentication and establish a remote access VPN connection without a valid user password.

Severity

9.3 (Critical)


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

SSVC

Exploitation: active Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-287 - Improper Authentication.

Assigner

checkpoint

References

3 references

URL	Tags
https://support.checkpoint.com/results/sk/sk185033
https://blog.checkpoint.com/security/check-point-…	vendor-advisory
https://www.cisa.gov/known-exploited-vulnerabilit…	government-resource

Impacted products

2 products

Vendor	Product	Version
checkpoint	Quantum Security Gateway	Affected: R82.10 with Jumbo Hotfix Take 19 or below Affected: R82 with Jumbo Hotfix Take 103 or below Affected: R81.20 with Jumbo Hotfix Take 141 or below Affected: R81.10, R81, and R80.40
checkpoint	Spark Firewalls	Affected: R80.20.X, R81.10.X, and R82.00.X

CISA KEV

Known Exploited Vulnerability - GCVE BCP-07 Compliant

KEV entry ID: ba636079-6682-4f8f-93e0-5668da7fd462

Vulnerability ID: CVE-2026-50751

Status: Confirmed

Status Updated: 2026-06-08 00:00 UTC

Exploited: Yes

Timestamps

First Seen: 2026-06-08

Asserted: 2026-06-08

Scope

Notes: KEV entry: Check Point Security Gateway Improper Authentication Vulnerability | Affected: Check Point / Security Gateway | Description: Check Point Security Gateway contains an improper authentication vulnerability in IKEv1 key exchange that could allow an unauthenticated remote attacker to bypass user authentication and establish a remote access VPN connection without a valid user password. | Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. | Due date: 2026-06-11 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://blog.checkpoint.com/security/check-point-releases-important-hotfix-for-vulnerabilities-in-deprecated-ikev1-vpn-protocol/ ; https://support.checkpoint.com/results/sk/sk185033?_gl=1*1wqeqhc*_gcl_au*MTI1MzE5MjI2LjE3ODA5MzQ1NTM. ; https://nvd.nist.gov/vuln/detail/CVE-2026-50751

Evidence

Type: Vendor Report

Signal: Successful Exploitation

Confidence: 80%

Source: cisa-kev

Details

Cwes	CWE-287
Feed	CISA Known Exploited Vulnerabilities Catalog
Product	Security Gateway
Due Date	2026-06-11
Date Added	2026-06-08
Vendorproject	Check Point
Vulnerabilityname	Check Point Security Gateway Improper Authentication Vulnerability
Knownransomwarecampaignuse	Unknown

References

CVE-2026-50751

Created: 2026-06-08 20:00 UTC | Updated: 2026-06-08 20:00 UTC

CIRCL

Known Exploited Vulnerability - GCVE BCP-07 Compliant

KEV entry ID: 9668c362-595a-4b6d-a788-a3429da4656b

Vulnerability ID: CVE-2026-50751

Status: Confirmed

Status Updated: 2026-06-08 13:18 UTC

Exploited: Yes

Characteristics

Remote Code Execution: No

Authentication Required: No

Local Access Required: Remote

Timestamps

First Seen: 2026-06-08

Asserted: 2026-06-08

Last Seen: 2026-06-08

Scope

Notes: CVE-2026-50751 - Check Point has observed active exploitation of this vulnerability in the wild. Ref https://blog.checkpoint.com/security/check-point-releases-important-hotfix-for-vulnerabilities-in-deprecated-ikev1-vpn-protocol

Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 100%

Source: Checkpoint

Details

Note	https://blog.checkpoint.com/security/check-point-releases-important-hotfix-for-vulnerabilities-in-deprecated-ikev1-vpn-protocol

Created: 2026-06-08 13:19 UTC | Updated: 2026-06-08 13:19 UTC

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 9.3,
              "baseSeverity": "CRITICAL",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "LOW",
              "privilegesRequired": "NONE",
              "scope": "CHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-50751",
                "options": [
                  {
                    "Exploitation": "active"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-08T19:52:43.919642Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          },
          {
            "other": {
              "content": {
                "dateAdded": "2026-06-08",
                "reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-50751"
              },
              "type": "kev"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-06-08T19:58:23.842Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "vendor-advisory"
            ],
            "url": "https://blog.checkpoint.com/security/check-point-releases-important-hotfix-for-vulnerabilities-in-deprecated-ikev1-vpn-protocol/"
          },
          {
            "tags": [
              "government-resource"
            ],
            "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-50751"
          }
        ],
        "timeline": [
          {
            "lang": "en",
            "time": "2026-06-08T00:00:00.000Z",
            "value": "CVE-2026-50751 added to CISA KEV"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Quantum Security Gateway",
          "vendor": "checkpoint",
          "versions": [
            {
              "status": "affected",
              "version": "R82.10 with Jumbo Hotfix Take 19 or below"
            },
            {
              "status": "affected",
              "version": "R82 with Jumbo Hotfix Take 103 or below"
            },
            {
              "status": "affected",
              "version": "R81.20 with Jumbo Hotfix Take 141 or below"
            },
            {
              "status": "affected",
              "version": "R81.10, R81, and R80.40"
            }
          ]
        },
        {
          "product": "Spark Firewalls",
          "vendor": "checkpoint",
          "versions": [
            {
              "status": "affected",
              "version": "R80.20.X, R81.10.X, and R82.00.X"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A logic flow weakness in Remote Access and Mobile Access certificate validation in deprecated IKEv1 key exchange allows an unauthenticated remote attacker to bypass user authentication and establish a remote access VPN connection without a valid user password."
        }
      ],
      "metrics": [
        {
          "format": "CVSS",
          "other": {
            "content": {
              "attackComplexity": "LOW",
              "attackRequirements": "NONE",
              "attackVector": "NETWORK",
              "baseScore": 9.3,
              "baseSeverity": "CRITICAL",
              "privilegesRequired": "NONE",
              "subAvailabilityImpact": "NONE",
              "subConfidentialityImpact": "NONE",
              "subIntegrityImpact": "NONE",
              "userInteraction": "NONE",
              "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N",
              "version": "4.0",
              "vulnAvailabilityImpact": "LOW",
              "vulnConfidentialityImpact": "HIGH",
              "vulnIntegrityImpact": "HIGH"
            },
            "type": "CVSSv4.0"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-287",
              "description": "CWE-287: Improper Authentication.",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-08T11:07:15.746Z",
        "orgId": "897c38be-0345-43cd-b6cf-fe179e0c4f45",
        "shortName": "checkpoint"
      },
      "references": [
        {
          "url": "https://support.checkpoint.com/results/sk/sk185033"
        }
      ],
      "title": "User Authentication Bypass in VPN Remote Access and Mobile Access"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "897c38be-0345-43cd-b6cf-fe179e0c4f45",
    "assignerShortName": "checkpoint",
    "cveId": "CVE-2026-50751",
    "datePublished": "2026-06-08T11:07:15.746Z",
    "dateReserved": "2026-06-07T09:42:08.251Z",
    "dateUpdated": "2026-06-08T19:58:23.842Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "cisa_known_exploited": {
      "cveID": "CVE-2026-50751",
      "cwes": "[\"CWE-287\"]",
      "dateAdded": "2026-06-08",
      "dueDate": "2026-06-11",
      "knownRansomwareCampaignUse": "Unknown",
      "notes": "https://blog.checkpoint.com/security/check-point-releases-important-hotfix-for-vulnerabilities-in-deprecated-ikev1-vpn-protocol/ ; https://support.checkpoint.com/results/sk/sk185033?_gl=1*1wqeqhc*_gcl_au*MTI1MzE5MjI2LjE3ODA5MzQ1NTM. ; https://nvd.nist.gov/vuln/detail/CVE-2026-50751",
      "product": "Security Gateway",
      "requiredAction": "Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.",
      "shortDescription": "Check Point Security Gateway contains an improper authentication vulnerability in IKEv1 key exchange that could allow an unauthenticated remote attacker to bypass user authentication and establish a remote access VPN connection without a valid user password.",
      "vendorProject": "Check Point",
      "vulnerabilityName": "Check Point Security Gateway Improper Authentication Vulnerability"
    },
    "epss": {
      "cve": "CVE-2026-50751",
      "date": "2026-06-08",
      "epss": "0.0001",
      "percentile": "0.0123"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-50751\",\"sourceIdentifier\":\"cve@checkpoint.com\",\"published\":\"2026-06-08T12:16:32.367\",\"lastModified\":\"2026-06-08T17:16:53.250\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"A logic flow weakness in Remote Access and Mobile Access certificate validation in deprecated IKEv1 key exchange allows an unauthenticated remote attacker to bypass user authentication and establish a remote access VPN connection without a valid user password.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N\",\"baseScore\":9.3,\"baseSeverity\":\"CRITICAL\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":3.9,\"impactScore\":4.7}]},\"weaknesses\":[{\"source\":\"cve@checkpoint.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-287\"}]}],\"references\":[{\"url\":\"https://support.checkpoint.com/results/sk/sk185033\",\"source\":\"cve@checkpoint.com\"},{\"url\":\"https://blog.checkpoint.com/security/check-point-releases-important-hotfix-for-vulnerabilities-in-deprecated-ikev1-vpn-protocol/\",\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\"}]}}",
    "vulnrichment": {
      "containers": "{\"cna\": {\"affected\": [{\"product\": \"Quantum Security Gateway\", \"vendor\": \"checkpoint\", \"versions\": [{\"status\": \"affected\", \"version\": \"R82.10 with Jumbo Hotfix Take 19 or below\"}, {\"status\": \"affected\", \"version\": \"R82 with Jumbo Hotfix Take 103 or below\"}, {\"status\": \"affected\", \"version\": \"R81.20 with Jumbo Hotfix Take 141 or below\"}, {\"status\": \"affected\", \"version\": \"R81.10, R81, and R80.40\"}]}, {\"product\": \"Spark Firewalls\", \"vendor\": \"checkpoint\", \"versions\": [{\"status\": \"affected\", \"version\": \"R80.20.X, R81.10.X, and R82.00.X\"}]}], \"title\": \"User Authentication Bypass in VPN Remote Access and Mobile Access\", \"descriptions\": [{\"lang\": \"en\", \"value\": \"A logic flow weakness in Remote Access and Mobile Access certificate validation in deprecated IKEv1 key exchange allows an unauthenticated remote attacker to bypass user authentication and establish a remote access VPN connection without a valid user password.\"}], \"problemTypes\": [{\"descriptions\": [{\"cweId\": \"CWE-287\", \"description\": \"CWE-287: Improper Authentication.\", \"lang\": \"en\", \"type\": \"CWE\"}]}], \"providerMetadata\": {\"orgId\": \"897c38be-0345-43cd-b6cf-fe179e0c4f45\", \"shortName\": \"checkpoint\", \"dateUpdated\": \"2026-06-08T11:07:15.746Z\"}, \"references\": [{\"url\": \"https://support.checkpoint.com/results/sk/sk185033\"}], \"metrics\": [{\"format\": \"CVSS\", \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}], \"other\": {\"type\": \"CVSSv4.0\", \"content\": {\"version\": \"4.0\", \"attackVector\": \"NETWORK\", \"attackComplexity\": \"LOW\", \"attackRequirements\": \"NONE\", \"privilegesRequired\": \"NONE\", \"userInteraction\": \"NONE\", \"vulnConfidentialityImpact\": \"HIGH\", \"vulnIntegrityImpact\": \"HIGH\", \"vulnAvailabilityImpact\": \"LOW\", \"subConfidentialityImpact\": \"NONE\", \"subIntegrityImpact\": \"NONE\", \"subAvailabilityImpact\": \"NONE\", \"baseScore\": 9.3, \"baseSeverity\": \"CRITICAL\", \"vectorString\": \"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N\"}}}]}, \"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"CHANGED\", \"version\": \"3.1\", \"baseScore\": 9.3, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"CRITICAL\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N\", \"integrityImpact\": \"LOW\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"HIGH\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-50751\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"active\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-06-08T19:52:43.919642Z\"}}}], \"references\": [{\"url\": \"https://blog.checkpoint.com/security/check-point-releases-important-hotfix-for-vulnerabilities-in-deprecated-ikev1-vpn-protocol/\", \"tags\": [\"vendor-advisory\"]}, {\"url\": \"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-50751\", \"tags\": [\"government-resource\"]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-06-08T16:01:50.476Z\"}}]}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-50751\", \"assignerOrgId\": \"897c38be-0345-43cd-b6cf-fe179e0c4f45\", \"state\": \"PUBLISHED\", \"assignerShortName\": \"checkpoint\", \"dateReserved\": \"2026-06-07T09:42:08.251Z\", \"datePublished\": \"2026-06-08T11:07:15.746Z\", \"dateUpdated\": \"2026-06-08T19:54:59.822Z\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

FKIE_CVE-2026-50751

Vulnerability from fkie_nvd - Published: 2026-06-08 12:16 - Updated: 2026-06-08 17:16

CISA KEV CIRCL

Severity

9.3 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N

Summary

References

	URL	Tags
	cve@checkpoint.com	https://support.checkpoint.com/results/sk/sk185033
	134c704f-9b21-4f2e-91b3-4a467353bcc0	https://blog.checkpoint.com/security/check-point-releases-important-hotfix-for-vulnerabilities-in-deprecated-ikev1-vpn-protocol/

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A logic flow weakness in Remote Access and Mobile Access certificate validation in deprecated IKEv1 key exchange allows an unauthenticated remote attacker to bypass user authentication and establish a remote access VPN connection without a valid user password."
    }
  ],
  "id": "CVE-2026-50751",
  "lastModified": "2026-06-08T17:16:53.250",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 9.3,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 4.7,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-06-08T12:16:32.367",
  "references": [
    {
      "source": "cve@checkpoint.com",
      "url": "https://support.checkpoint.com/results/sk/sk185033"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://blog.checkpoint.com/security/check-point-releases-important-hotfix-for-vulnerabilities-in-deprecated-ikev1-vpn-protocol/"
    }
  ],
  "sourceIdentifier": "cve@checkpoint.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-287"
        }
      ],
      "source": "cve@checkpoint.com",
      "type": "Secondary"
    }
  ]
}

GHSA-JQXH-X9F5-WCGW

Vulnerability from github – Published: 2026-06-08 12:30 – Updated: 2026-06-08 18:31

Details

Severity

9.3 (Critical)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-50751"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-287"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-08T12:16:32Z",
    "severity": "CRITICAL"
  },
  "details": "A logic flow weakness in Remote Access and Mobile Access certificate validation in deprecated IKEv1 key exchange allows an unauthenticated remote attacker to bypass user authentication and establish a remote access VPN connection without a valid user password.",
  "id": "GHSA-jqxh-x9f5-wcgw",
  "modified": "2026-06-08T18:31:46Z",
  "published": "2026-06-08T12:30:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-50751"
    },
    {
      "type": "WEB",
      "url": "https://blog.checkpoint.com/security/check-point-releases-important-hotfix-for-vulnerabilities-in-deprecated-ikev1-vpn-protocol"
    },
    {
      "type": "WEB",
      "url": "https://support.checkpoint.com/results/sk/sk185033"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}

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

Known affected 2 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

Known affected 2 products

Product	Identifier	Version	Remediation
vers:unknown/* checkpoint / Quantum Security Gateway		vers:unknown/*
vers:unknown/* checkpoint / Spark Firewalls		vers:unknown/*

References

5 references

URL	Category
https://blog.checkpoint.com/security/check-point-…	external
https://support.checkpoint.com/results/sk/sk185033	external
https://support.checkpoint.com/results/sk/sk185035	external
https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-…	self
https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-…	self

JSON

To clipboard

{
  "document": {
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "tlp": {
        "label": "WHITE"
      }
    },
    "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": {
      "category": "coordinator",
      "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.",
          "version": "1.3"
        }
      },
      "id": "NCSC-2026-0179",
      "initial_release_date": "2026-06-08T14:29:06.810408Z",
      "revision_history": [
        {
          "date": "2026-06-08T14:29:06.810408Z",
          "number": "1.0.0",
          "summary": "Initiele versie"
        }
      ],
      "status": "final",
      "version": "1.0.0"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:unknown/*",
                "product": {
                  "name": "vers:unknown/*",
                  "product_id": "CSAFPID-1"
                }
              }
            ],
            "category": "product_name",
            "name": "Quantum Security Gateway"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:unknown/*",
                "product": {
                  "name": "vers:unknown/*",
                  "product_id": "CSAFPID-2"
                }
              }
            ],
            "category": "product_name",
            "name": "Spark Firewalls"
          }
        ],
        "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": {
        "known_affected": [
          "CSAFPID-1",
          "CSAFPID-2"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-50751 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-50751.json"
        }
      ],
      "title": "CVE-2026-50751"
    },
    {
      "cve": "CVE-2026-50752",
      "cwe": {
        "id": "CWE-295",
        "name": "Improper Certificate Validation"
      },
      "notes": [
        {
          "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"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1",
          "CSAFPID-2"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-50752 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-50752.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.4,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1",
            "CSAFPID-2"
          ]
        }
      ],
      "title": "CVE-2026-50752"
    }
  ]
}

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.

Action not permitted

CVE-2026-50751 (GCVE-0-2026-50751)

CISA KEV

Known Exploited Vulnerability - GCVE BCP-07 Compliant

Timestamps

Scope

Evidence

Vendor Report Successful Exploitation Confidence: 80% Source: cisa-kev

Details

References

CIRCL

Known Exploited Vulnerability - GCVE BCP-07 Compliant

Characteristics

Timestamps

Scope

Evidence

Public Report Successful Exploitation Confidence: 100% Source: Checkpoint

Details

FKIE_CVE-2026-50751

GHSA-JQXH-X9F5-WCGW

NCSC-2026-0179

Tags

Sightings

Nomenclature