CVE-2026-50751

User Authentication Bypass in VPN Remote Access and Mobile Access

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.

Affected

checkpoint · Quantum Security Gateway · Spark Firewalls

CVSS v3.1 CNA

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

EPSS

85.34% chance of exploitation in the next 30 days, 100th percentile

CISA KEV

added 2026-06-08, used in ransomware campaigns

Nuclei

critical

Published

2026-06-08

Updated

2026-08-04

Proof-of-concept exploits (3)

• fevar54/CVE-2026-50751---Check-Point-IKEv1-Authentication-Bypass-Exploit1★ · 2026-06-10
• 0xBlackash/CVE-2026-507512★ · 2026-06-08
• e4zyy/Project-CVE-2026-507510★ · 2026-08-28

Nuclei templates (1)

• projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-50751.yaml

Security advisories

• https://blog.checkpoint.com/security/check-point-releases-important-hotfix-for-vulnerabil…
• https://support.checkpoint.com/results/sk/sk185033

References

• CVE Record
• NVD entry

Related

• CVE-2023-21839
• CVE-2023-43654
• CVE-2024-21182
• CVE-2024-3094
• CVE-2024-42461
• CVE-2025-20343