Critical 9.3Known exploited (CISA KEV)Published Jun 8, 2026

CVE-2026-50751User Authentication Bypass in VPN Remote Access and Mobile Access

Updated under an hour ago (2026-10-19 04:50 UTC)

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It affects checkpoint Quantum Security Gateway and 3 other products. Add what you run to find out whether that includes you.

CISA lists it as known exploited since Jun 8, 2026; federal agencies had to remediate by Jun 11, 2026, and it is known to be used in ransomware. Treat that date as your deadline.

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Every CVE for checkpoint Quantum Security Gateway

Exploited in the last 30 days

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: 9.3 CRITICAL (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N
Weakness (CWE): CWE-287
Known exploited: Added to CISA KEV Jun 8, 2026; federal remediation due Jun 11, 2026; known ransomware useApply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
EPSS (exploitation in the next 30 days): 85.34% (percentile 100)
Assigned by: checkpoint
NVD analysis: Analyzed
Record last updated: Aug 4, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

checkpoint Quantum Security Gateway checkpoint:quantum_security_gateway (from the name)	R82.10 with Jumbo Hotfix Take 19 or below; R82 with Jumbo Hotfix Take 103 or below; R81.20 with Jumbo Hotfix Take 141 or below; R81.10, R81, and R80.40	CNA record
checkpoint Spark Firewalls checkpoint:spark_firewalls (from the name)	R80.20.X, R81.10.X, and R82.00.X	CNA record
checkpoint gaia_os checkpoint:gaia_os	from r80.40 before r81.20; r81.20; r81.20; r81.20; r81.20; r81.20; r81.20; r81.20; and 50 more ranges	NVD
checkpoint gaia_embedded checkpoint:gaia_embedded	from r80.20.00 before r81.10.17; r81.10.17; r81.10.17; r81.10.17; r81.10.17; r81.10.17; r81.10.17; from r80.20.00 before r82.00.10; and 7 more ranges	NVD

References

https://support.checkpoint.com/results/sk/sk185033mitigation, patch, vendor-advisory
https://blog.checkpoint.com/security/check-point-releases-important-hotfix-for-vulnerabilities-in-deprecated-ikev1-vpn-protocol/vendor-advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-50751us-government-resource

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.