CVE-2026-50752
Certificate Validation Bypass in VPN Site-to-Site Connections Using IKEv1
- Published
- Jun 8, 2026
- Updated
- Jun 10, 2026
- Assigning CNA
- checkpoint
- Evidence observed
- Aug 8, 2026
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:NLow · next 30 days
- Percentile
- 91.9%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
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.
Sources
1- CheckPoint-CVE-WebscannerScanner
A web version of the bash scripts wrote for Check Point CVE-2026-50751 and CVE-2026-50752. This uses a local server to scan and make changes using Check Point Web API
Responsible use
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