Check Point Security Gateway's IKEv1 Key Exchange Flaw Lets Unauthenticated Attackers Establish Remote Access VPN Tunnels Without a Valid Password; CISA's June 11th KEV Deadline Has Passed

Last refreshed2026-09-27

Status: KEV | Advisory ID: CVE-2026-50751

Key Details

CVE	CVE-2026-50751
Vulnerability Name	Check Point Security Gateway Improper Authentication Vulnerability
Affected products	Check Point Security Gateway
Exploitation status	Listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, indicating confirmed active exploitation.
Classified as	CWE-287 (Improper Authentication)
KEV listing	Added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2026-06-08.
Exploitation prediction (EPSS)	6.30% probability of exploitation in the next 30 days (93% percentile) -- FIRST.org's EPSS model.
Federal remediation deadline	2026-06-11 (CISA KEV, Binding Operational Directive).

Affected Products, Subsystems & Sectors

Vendor	Product	Affected Versions	Patch Status
Check Point	Security Gateway

Vendor

Product

Affected Versions

Patch Status

Check Point

Security Gateway

Subsystems	General OT
Sectors	Multiple

What to Know

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.

What to Do

Monitor Check Point's web page for any future patch releases.

References

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-50751
CVE	https://www.cve.org/CVERecord?id=CVE-2026-50751

Source

Reference

NVD

https://nvd.nist.gov/vuln/detail/CVE-2026-50751

CVE

https://www.cve.org/CVERecord?id=CVE-2026-50751

KEV Required Action

Field	Value
KEV Link	https://www.cisa.gov/known-exploited-vulnerabilities-catalog
Date Added to KEV	2026-06-08
Required Action Due Date	2026-06-11
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.

Field

Value

KEV Link

https://www.cisa.gov/known-exploited-vulnerabilities-catalog

Date Added to KEV

2026-06-08

Required Action Due Date

2026-06-11

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.