Check Point IKEv1 VPN Cert Validation Bypass (CVE-2026-50752)
CVE-2026-50752 Published on June 8, 2026
Certificate Validation Bypass in VPN Site-to-Site Connections Using IKEv1
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.
Vulnerability Analysis
CVE-2026-50752 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality and integrity, and no impact on availability.
Weakness Type
Improper Certificate Validation
The software does not validate, or incorrectly validates, a certificate. When a certificate is invalid or malicious, it might allow an attacker to spoof a trusted entity by interfering in the communication path between the host and client. The software might connect to a malicious host while believing it is a trusted host, or the software might be deceived into accepting spoofed data that appears to originate from a trusted host.
Products Associated with CVE-2026-50752
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Affected Versions
checkpoint Quantum Security Gateway:- Version R82.10 with Jumbo Hotfix Take 19 or below is affected.
- Version R82 with Jumbo Hotfix Take 103 or below is affected.
- Version R81.20 with Jumbo Hotfix Take 141 or below is affected.
- Version R81.10, R81, and R80.40 is affected.
- Version R80.20.X, R81.10.X, and R82.00.X is affected.