CVE-2026-50752 High · 7.4 EPSS 5.0%
Certificate Validation Bypass in VPN Site-to-Site Connections Using IKEv1
checkpoint · Quantum Security Gateway
Official description · CVE.org
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.
Priority scorePatchfirst’s 0 to 100 ranking. It adds points for CISA KEV listing, ransomware use, EPSS, threat reports, public exploit code and CVSS. Every CVE page shows the breakdown. Breakdown
81.5 / 100
- Exploited
- Yes, in VulnCheck KEV
- Reports
- 0
- Tactics
- 0/15
Exploitation timelineDated milestones for a CVE: when it was disclosed, when exploit code became public, when exploitation was confirmed, and when threat reports named it.
First seen exploited 3 months after disclosure.
- Disclosedday 0
- First seen exploitedVulnCheck KEV evidence+3 mo
MITRE ATT&CKA public catalogue of the techniques attackers use, maintained by MITRE. Patchfirst uses it to describe what attackers do with a vulnerability. techniques
No techniques linkedNo ATT&CK techniques are linked to this CVE yet. MITRE CTID has not mapped it, and no report passage in the corpus ties it to a technique.
What security researchers reported
Not named in any threat report yetAlso mentioned in 17 community threat pulses (AlienVault OTX)
Weaker evidencePulses are indicator collections that anyone can publish. A mention is not confirmation of exploitation.
- Check Point Critical Mgmt/VPN RCEs — CVE-2026-91843, 85102, 8510321 Sep 2026
- Ransomware Gangs Attack Palo Alto, Fortinet, Citrix, and Check Point VPNs to Target Corporate Networks.6 Aug 2026
- Ernstige kwetsbaarheden in Check Point Remote and Mobile Access VPN [Nationaal Cyber Security Centrum - Nieuwsberichten]31 Jul 2026
- CVE-2026-16232 Check Point SmartConsole Auth Bypass (Active Exploitation)24 Jul 2026
- Check Point VPN Authentication Bypass Under Active Exploitation.1 Jul 2026
- Known_Cve | Jun 18, 2026 | Part 1/217 Jun 2026
- 11 more on OTX