CVE-2026-50752
High
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.
SeverityHigh
CVSS7.4
Exploit probability—
ProductQuantum Security Gateway
PublishedJun 8, 2026
First seenJun 8, 2026
Weakness typeCWE-295CWE-295
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| 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 | — |
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