Vulnerability · Published Jun 8, 2026 · Assigned by checkpoint
CVE-2026-50752Certificate Validation Bypass in VPN Site-to-Site Connections Using IKEv1
High 7.4
In plain English
A high-severity improper certificate validation in Quantum Security Gateway from checkpoint. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 4.7% (higher than 92% of all known vulnerabilities).
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| checkpoint | Quantum Security Gateway | R82.10 with Jumbo Hotfix Take 19 or belowR82 with Jumbo Hotfix Take 103 or belowR81.20 with Jumbo Hotfix Take 141 or belowR81.10, R81, and R80.40 |
| checkpoint | Spark Firewalls | R80.20.X, R81.10.X, and R82.00.X |
Weakness: CWE-295 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N