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CVE-2026-50751User Authentication Bypass in VPN Remote Access and Mobile Access
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.
9.3 CRITICALEPSS 85.34%⚡ Known Exploited (CISA KEV)NVD: Analyzed
Overview
Severity
| Score | Severity | Version | Vector String |
|---|---|---|---|
| 9.3 | CRITICAL | 3.1CISA-ADP | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N |
CISA required action
⚡ Known exploited · remediation due Jun 11, 2026
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Details
- CVE ID
- CVE-2026-50751
- Status
- Analyzed
- Assigner (CNA)
- checkpoint
- Published
- Jun 8, 2026
- Last modified
- 2026-08-04 05:16 UTC
- Weaknesses
- CWE-287 · Improper Authentication.
Affected Products
As published by the CNA in the CVE record.
checkpointQuantum Security Gateway4 version ranges
- 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
checkpointSpark Firewalls1 version range
- R80.20.X, R81.10.X, and R82.00.X
References
- support.checkpoint.com https://support.checkpoint.com/results/sk/sk185033
- blog.checkpoint.com https://blog.checkpoint.com/security/check-point-releases-important-hotfix-for-vulnerabilities-in-deprecated-ikev1-vpn-protocol/
- cisa.gov https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-50751