CVE-2026-50751
Check Point Security Gateway Improper Authentication Vulnerability
Check Point Security Gateway
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.
Exploitation status
CISA Known Exploited Vulnerabilities
Listed by CISA on 8 June 2026. US federal agencies were required to remediate it by 11 June 2026. CISA records this vulnerability as known to be used in ransomware campaigns.
EPSS — exploitation probability
FIRST puts the probability of exploitation activity in the next 30 days at 82.6%, which is higher than 99.6% of all scored vulnerabilities. EPSS is a forecast of activity, not a measure of severity, and it is rescored daily.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N
Frequently asked questions
Is CVE-2026-50751 being exploited by ransomware groups?
No ransomware group in this database is currently recorded as exploiting CVE-2026-50751.
What does CVE-2026-50751 affect?
CVE-2026-50751 affects Check Point Security Gateway. 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.
How severe is CVE-2026-50751?
CVE-2026-50751 is rated CRITICAL with a CVSS base score of 9.3. EPSS puts the probability of exploitation in the next 30 days at 82.6%, higher than 99.6% of all scored vulnerabilities. It is listed in the CISA Known Exploited Vulnerabilities catalog, with a federal remediation deadline of 11 June 2026.
How should organisations respond to CVE-2026-50751?
Apply the vendor patch for Check Point Security Gateway as the first priority, and treat any internet-facing instance as the most urgent. Because this vulnerability is associated with ransomware activity, also review whether the affected systems were reachable before patching, rather than assuming that patching alone closes the incident.