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Vulnerabilities

Vulnerability · CVE-2026-50751

Check Point Security Gateway Improper Authentication Vulnerability

Published Jun 8, 2026 · catalog updated Aug 3, 2026 · Check Point Security Gateway

Patch now

CVE-2026-50751 is in the CISA known-exploited catalog, due Jun 11, 2026. Confirm Check Point Security Gateway against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Severity
Critical9.3
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
85.34%
Remediation
Remediation guidance
Affected products
cpe checkpoint/gaia embedded · cpe checkpoint/gaia os · vendor Check Point Security Gateway

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. VulnCheck canary evidence. Initial-access exploit intelligence.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe checkpoint/gaia embeddedversion unspecified
  • cpe checkpoint/gaia osr81.20
  • vendor Check Point Security Gatewayversion unspecified

How to fix CVE-2026-50751

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2026-50751 is in the CISA known-exploited catalog, due Jun 11, 2026. Confirm Check Point Security Gateway against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Compare what you have installed with checkpoint/gaia os r81.20. Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

What should an analyst verify?

CWE-287: Improper Authentication. EPSS 85.34%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jun 8, 2026 · Catalog

    Detected

    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.

  2. Jun 8, 2026 · CISA KEV

    Known exploited

    Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

  3. Jun 11, 2026 · CISA KEV

    Remediation due

    Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

  4. Aug 3, 2026 · Catalog

    Updated

    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.

Sources

  • CISA KEVConfirmed exploitationCVE-2026-50751

    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.

    cisa.gov
  • CVE.orgVulnerability recordCVE-2026-50751

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-50751

    30-day exploitation probability 85.3%

    first.org
  • NIST NVDVulnerability recordCVE-2026-50751

    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.

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2026-50751

    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.

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.