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

Quick assessment

Affected
checkpoint Quantum Security Gateway
Exploitation
Confirmed exploitation in the wild; remediate immediately
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Check Point Quantum Security Gateway是以色列Check Point公司的一系列企业级安全网关设备。 Check Point Quantum Security Gateway存在授权问题漏洞，该漏洞源于已弃用的IKEv1密钥交换中证书验证逻辑流程缺陷，可能导致未经身份验证的远程攻击者绕过用户认证并建立远程访问VPN连接。

AI Predicted 8.8 Difficulty: Easy KEV · Ransomware EPSS 6.30% · P93

Public Exploits 1

Nuclei · 1 CVE-2026-50751.yaml [template]

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 5

VendorProduct Version RangeStatus
checkpoint Quantum Security Gateway R82.10 with Jumbo Hotfix Take 19 or below affected
R82 with Jumbo Hotfix Take 103 or below affected
R81.20 with Jumbo Hotfix Take 141 or below affected
R81.10, R81, and R80.40 affected
checkpoint Spark Firewalls R80.20.X, R81.10.X, and R82.00.X affected
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I. Basic Information for CVE-2026-50751

Vulnerability Information
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Vulnerability Title
User Authentication Bypass in VPN Remote Access and Mobile Access
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Check Point Quantum Security Gateway 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Check Point Quantum Security Gateway是以色列Check Point公司的一系列企业级安全网关设备。 Check Point Quantum Security Gateway存在授权问题漏洞，该漏洞源于已弃用的IKEv1密钥交换中证书验证逻辑流程缺陷，可能导致未经身份验证的远程攻击者绕过用户认证并建立远程访问VPN连接。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
checkpoint Quantum Security Gateway R82.10 with Jumbo Hotfix Take 19 or below -
checkpoint Spark Firewalls R80.20.X, R81.10.X, and R82.00.X -

II. Public POCs for CVE-2026-50751

# POC Description Source Link Shenlong Link
1 IKEv1 key exchange contains a broken authentication caused by logic flow weakness in Remote Access and Mobile Access certificate validation, letting unauthenticated remote attackers bypass user authentication and establish VPN connections without valid passwords, exploit requires use of deprecated IKEv1. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-50751.yaml POC Details
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III. Intelligence Information for CVE-2026-50751

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Vendor Advisories for CVE-2026-50751 (1)

IV. Related Vulnerabilities

Same product: Quantum Security Gateway
Same vendor: checkpoint
Same weakness: CWE-287

V. Comments for CVE-2026-50751

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