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CVE-2026-50752

Certificate Validation Bypass in VPN Site-to-Site Connections Using IKEv1

Published: Jun 8, 2026Updated: Jun 8, 2026 Sources: CVE List NVD BDUCWE-295
7.4HIGH
NVD MITRE
EPSS Score
4.9%
Top 9.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:HPR:NUI:NS:UC:HI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:NAvailability
None
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Weaknesses

CWE-295

Affected Products

checkpoint
commercial·ILaka checkpoint firewall, check point firewall-1
Quantum Security Gateway
Security Products
Spark Firewalls
Security Products
Check Point Software Technologies Ltd.
commercial·USaka checkpoint
Security Gateways
Security Products
Spark Firewall
Security Products

Exploitability

Official Patch Available
Is your org exposed to CVE-2026-50752?We can run the check for you — a free external exposure review, no install. Check my exposure

Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

1 technique
Collection
View detailed technique mapping

References

https://support.checkpoint.com/results/sk/sk185035
support.checkpoint.com
https://xakep.ru/2026/06/09/check-point-0day/
xakep.ru
https://www.securitylab.ru/news/573575.php
securitylab.ru
and 1 more references View all →
News mentions
7

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