CVE-2026-50752
Certificate Validation Bypass in VPN Site-to-Site Connections Using IKEv1
CVSS Score
7.4
EPSS Score
0.0%
EPSS Percentile
7th
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.
| CWE | CWE-295 |
| Vendor | checkpoint |
| Product | quantum security gateway |
| Published | Jun 8, 2026 |
| Last Updated | Jun 9, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None
Affected Versions
checkpoint / Quantum Security Gateway
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
checkpoint / Spark Firewalls
R80.20.X, R81.10.X, and R82.00.X