Check Point Security Gateway Improper Authentication Vulnerability (CVE-2026-50751)
Severity: critical · Patch status: patched · Since 2026-06-08 · CVE-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 added CVE-2026-50751 to its Known Exploited Vulnerabilities catalog on Jun 8, 2026, which means attackers are exploiting it in the wild. CISA reports known use in ransomware campaigns.
What to do
- Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- US federal agencies must remediate by Jun 11, 2026 (BOD 22-01); treat that as the outer limit.
Sources
All live incidents on Threat Watch
