CVE-2026-50752
Certificate Validation Bypass in VPN Site-to-Site Connections Using IKEv1
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.
INFO
Published Date :
June 8, 2026, 12:16 p.m.
Last Modified :
June 8, 2026, 2:57 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 897c38be-0345-43cd-b6cf-fe179e0c4f45 | ||||
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Disable IKEv1 protocol on all devices.
- Migrate VPN connections to IKEv2.
- Ensure certificate validation is correctly configured.
Public PoC/Exploit Available at Github
CVE-2026-50752 has a 1 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-50752.
| URL | Resource |
|---|---|
| https://support.checkpoint.com/results/sk/sk185035 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-50752 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-50752
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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
JavaScript HTML CSS
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-50752 vulnerability anywhere in the article.
-
TheCyberThrone
CISA adds BerriAI LiteLLM & Check Point Security Gateway to KEV
CISA added two vulnerabilities to its Known Exploited Vulnerabilities catalog on June 8, 2026, confirming active exploitation of both. The two entries are CVE-2026-42271 (BerriAI LiteLLM Command Injec ... Read more
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The Hacker News
Critical Check Point VPN Flaw Exploited to Bypass Passwords in IKEv1 Setups
Check Point has warned of active exploitation of a critical vulnerability impacting Remote Access VPN and Mobile Access deployments that are configured to use the deprecated IKEv1 key exchange protoco ... Read more
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security.nl
Check Point meldt actief misbruik van kritiek lek in Remote Access VPN
Aanvallers maken actief misbruik van een kritieke kwetsbaarheid in Check Point Remote Access VPN, waardoor een ongeauthenticeerde aanvaller zonder geldig wachtwoord een vpn-verbinding kan opzetten, zo ... Read more
The following table lists the changes that have been made to the
CVE-2026-50752 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by [email protected]
Jun. 08, 2026
Action Type Old Value New Value Added 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. Added CVSS V3.1 AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N Added CWE CWE-295 Added Reference https://support.checkpoint.com/results/sk/sk185035