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CVE-2026-50751

Check Point Security Gateway Improper Authentication

9.3 CRITICALActively exploited (CISA KEV)Used in ransomwareEPSS 6.42%
  1. Published8 Jun 2026
  2. Added to CISA KEV8 Jun 2026
  3. Remediation due11 Jun 2026
Actively exploited (CISA KEV)

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.

Added to KEV: 8 Jun 2026Federal remediation due: 11 Jun 2026Used in ransomware

Description

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeChanged
ConfidentialityHigh
IntegrityLow
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N

Affected products

Check Point Gaia Embedded≥ r80.20.00 < r81.10.17 · ≥ r80.20.00 < r82.00.10 · r81.10.17 · r82.00.10
Check Point Gaia OS≥ r80.40 < r81.20 · r81.20 · r82 · r82.10

Remediation

Fixed in
Check Point Gaia Embedded≥ r81.10.17
Check Point Gaia OS≥ r81.20

References

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Frequently asked

Is CVE-2026-50751 being actively exploited?

Yes. CVE-2026-50751 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 8 Jun 2026. It has been used in ransomware campaigns.

How severe is CVE-2026-50751?

CVE-2026-50751 has a CVSS 3.1 base score of 9.3, rated critical. EPSS estimates a 6.42% probability of exploitation.

Which products are affected by CVE-2026-50751?

Affected products include Check Point Gaia Embedded, Check Point Gaia OS.

How do I fix CVE-2026-50751?

Upgrade affected software to a fixed version, for example Check Point Gaia Embedded r81.10.17, Check Point Gaia OS r81.20 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-50751 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.