How severe is CVE-2026-50751?

CVE-2026-50751 has a CVSS 3.1 base score of 9.3 (CRITICAL). EPSS estimates a 6.3% probability of exploitation in the next 30 days. It is listed in the CISA Known Exploited Vulnerabilities catalog.

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

CISA Known Exploited Vulnerabilities

Check Point Security Gateway Improper Authentication Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.

Added to KEV

2026-06-08

Remediation due

2026-06-11

Ransomware

Known use

Required action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

CISA notes
https://blog.checkpoint.com/security/check-point-releases-important-hotfix-for-vulnerabilities-in-deprecated-ikev1-vpn-protocol/ ; https://support.checkpoint.com/results/sk/sk185033?_gl=1*1wqeqhc*_gcl_au*MTI1MzE5MjI2LjE3ODA5MzQ1NTM. ; https://nvd.nist.gov/vuln/detail/CVE-2026-50751

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.

Severity

CVSS 3.1 · CISA9.3 CRITICAL

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

SSVC · CISA-ADP

Exploitationactive

Automatableyes

Technical impacttotal

Affected Products

Vendor	Product	Affected versions
checkpoint	Quantum Security Gateway	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
checkpoint	Spark Firewalls	R80.20.X, R81.10.X, and R82.00.X

References

1 Links

Other references

https://support.checkpoint.com/results/sk/sk185033

Record Details

Published

2026-06-08

Last updated

2026-08-04

Assigner (CNA)

checkpoint

Credited to

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Related Tool Categories

Tool categories that test for or protect against this vulnerability class.

CWE-287 · Improper Authentication

IAM Tools Application Security Tools

CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.