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CISA Known Exploited Vulnerability

This CVE is actively exploited in the wild. CISA mandates federal agencies to patch immediately.

CVE

CVE-2026-50751

9.3

CVSScritical

Exploitable remotely over the internet · no authentication required.

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.

Attack Vector

Network

Privileges Req.

None

User Interaction

None

quantum security gatewayspark firewalls

Updated Sep 18, 2026View on NVD →

S4E scanner

criticalProduct Based Web Vulnerabilities~10 seconds

Check Point IKEv1 Remote-Access VPN - Certificate Authentication Bypass

IKEv1 key exchange contains a broken authentication caused by logic flow weakness in Remote Access and Mobile Access certificate validation, letting unauthenticated remote attackers bypass user authentication and establish VPN connections without valid passwords, exploit requires use of deprecated IKEv1. References: https://labs.watchtowr.com/lets-not-go-to-the-checkpoint-its-a-silly-place-cve-2026-50751/ https://support.checkpoint.com/results/sk/sk185033 https://github.com/watchtowrlabs/watchTowr-vs-Check-Point-CVE-2026-50751 Remediation: Apply Check Point hotfix sk185033 which restores the certificate signature verification in verifyMessagePhase1.

Used 3.4k times · domain, subdomain, ipv4

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CVE history: quantum security gateway

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