Certificate Validation Bypass in VPN Site-to-Site Connections Using IKEv1
At a glance
Severity
HIGH 7.4
EPSS
EPSS 5.00 % · percentile 92 (2026-10-27)
State
PUBLISHED
Published
Updated
Assigner
checkpoint
NVD status
Awaiting Analysis
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 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
