CVEs / CVE-2026-50751
CVE-2026-50751: Check Point Security Gateway Improper Authentication Vulnerability
- Known exploited in the CISA KEV catalog since 8 Jun 2026
- critical 9.3 CVSS 3.1 (from the CNA)
- EPSS 85.3% chance of exploitation in the next 30 days, higher than 99% of CVEs (30 Oct 2026)
- Last changed at its sources
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Summary
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.
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.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| checkpoint Quantum Security Gateway | R82.10 with Jumbo Hotfix Take 19 or below | — |
| checkpoint Quantum Security Gateway | R82 with Jumbo Hotfix Take 103 or below | — |
| checkpoint Quantum Security Gateway | R81.20 with Jumbo Hotfix Take 141 or below | — |
| checkpoint Quantum Security Gateway | R81.10, R81, and R80.40 | — |
| checkpoint Spark Firewalls | R80.20.X, R81.10.X, and R82.00.X | — |
Exploitation
| In CISA KEV since | 8 Jun 2026 |
|---|---|
| Due date for US federal agencies | 11 Jun 2026 |
| Used in ransomware campaigns | Known |
| 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. |
Severity
| CVSS 3.1 | 9.3 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:NScored by the CNA (134c704f-9b21-4f2e-91b3-4a467353bcc0) |
|---|---|
| Weakness | CWE-287 |
References
- CVE-2026-50751 on NVD
- CVE-2026-50751 in the CISA KEV catalog
- https://blog.checkpoint.com/security/check-point-releases-important-hotfix-for-vulnerabilities-in-deprecated-ikev1-vpn-protocol/ (cited by CISA)
- https://support.checkpoint.com/results/sk/sk185033?_gl=1*1wqeqhc*_gcl_au*MTI1MzE5MjI2LjE3ODA5MzQ1NTM (cited by CISA)
- https://support.checkpoint.com/results/sk/sk185033 Mitigation, 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-2026-50751 US Government Resource
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.