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CVE-2026-50752— Certificate Validation Bypass in VPN Site-to-Site Connections Using IKEv1

Quick assessment

Affected
checkpoint Quantum Security Gateway
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
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和Check Point Spark Firewalls都是以色列Check Point公司的产品。Check Point Quantum Security Gateway是一系列企业级安全网关设备。Check Point Spark Firewalls是一系列面向中小企业和分支机构的安全防火墙设备。 Check Point Quantum Security Gateway和Check Point Spark Firewalls存在信

CVSS 7.4 · High EPSS 0.26% · P16

Possible ATT&CK Techniques 1 AI

T1557 · Adversary-in-the-Middle

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-2026-50752

Vulnerability Information
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Vulnerability Title
Certificate Validation Bypass in VPN Site-to-Site Connections Using IKEv1
Source: CVE Program / CVE List V5
Vulnerability Description
A weakness in the certificate validation logic of the deprecated IKEv1 key exchange may allow an unauthenticated attacker positioned as a man-in-the-middle to bypass certificate validation in VPN site-to-site connections that use certificate-based authentication. Successful exploitation could allow interception or modification of traffic traversing the VPN tunnel.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
证书验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Check Point Quantum Security Gateway和Check Point Spark Firewalls 信任管理问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Check Point Quantum Security Gateway和Check Point Spark Firewalls都是以色列Check Point公司的产品。Check Point Quantum Security Gateway是一系列企业级安全网关设备。Check Point Spark Firewalls是一系列面向中小企业和分支机构的安全防火墙设备。 Check Point Quantum Security Gateway和Check Point Spark Firewalls存在信
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-2026-50752

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-50752

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Vendor Advisories for CVE-2026-50752 (1)

IV. Related Vulnerabilities

Same product: Quantum Security Gateway
Same vendor: checkpoint
Same weakness: CWE-295

V. Comments for CVE-2026-50752

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