# CVE-2026-50751 — checkpoint Quantum Security Gateway

> As of 2026-08-04, CVE-2026-50751 is a CRITICAL-severity vulnerability in checkpoint Quantum Security Gateway, CVSS v3.1 9.3, EPSS 6.4% (93.5th percentile). Threadlinqs Intelligence links 9 tracked threat campaigns to CVE-2026-50751, most recently “Emperador Ransomware Group Claims 3.9GB Data Theft from AB InBev (Budweiser, Corona Maker) - Unverified $1M Bitcoin Extortion”.

**Last updated:** 2026-08-04

## What is CVE-2026-50751?

A logic flow weakness in Remote Access and Mobile Access certificate validation in deprecated IKEv1 key exchange allows an unauthenticated remote attacker to bypass user authentication and establish a remote access VPN connection without a valid user password.

The record classifies CVE-2026-50751 under weakness class [CWE-287](https://intel.threadlinqs.com/cwe/CWE-287). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs no user interaction, and has high impact on confidentiality. 2 affected-product entries are recorded, across 1 vendor, listed below. The identifier was first published 146 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 9.3 — CRITICAL (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N`)
- **EPSS (FIRST):** 6.4% probability of exploitation in the next 30 days, higher than 93.5% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 10/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-06-08, last modified 2026-08-04

## Is CVE-2026-50751 being exploited?

Weaponised exploit code for CVE-2026-50751 is publicly available. 9 public proof-of-concept repositories are tracked for this identifier. A ProjectDiscovery Nuclei detection template exists (`http/cves/2026/CVE-2026-50751.yaml`). It currently carries a trending score of 38 in the Threadlinqs vulnerability feed.

- [watchtowrlabs/watchTowr-vs-Check-Point-CVE-2026-50751](https://github.com/watchtowrlabs/watchTowr-vs-Check-Point-CVE-2026-50751) (github)
- [WadesWeaponShed/CVE-2026-50751-Mitigation-Scripts](https://github.com/WadesWeaponShed/CVE-2026-50751-Mitigation-Scripts) (github)
- [0xBlackash/CVE-2026-50751](https://github.com/0xBlackash/CVE-2026-50751) (github)
- [fevar54/CVE-2026-50751---Check-Point-IKEv1-Authentication-Bypass-Exploit](https://github.com/fevar54/CVE-2026-50751---Check-Point-IKEv1-Authentication-Bypass-Exploit) (github)
- [WadesWeaponShed/CheckPoint-CVE-Webscanner](https://github.com/WadesWeaponShed/CheckPoint-CVE-Webscanner) (github)
- [uLl0a/CVE-2026-50751](https://github.com/uLl0a/CVE-2026-50751) (github)
- [fernstedt/CVE-2026-50751](https://github.com/fernstedt/CVE-2026-50751) (github)
- [e4zyy/Project-CVE-2026-50751](https://github.com/e4zyy/Project-CVE-2026-50751) (github)

## Affected products and versions

- [checkpoint](https://intel.threadlinqs.com/vendors/checkpoint): Quantum Security Gateway, Spark Firewalls

## How to fix CVE-2026-50751

The record marks a vendor fix as available for CVE-2026-50751. Patch reference: [https://support.checkpoint.com/results/sk/sk185033](https://support.checkpoint.com/results/sk/sk185033). Vendor advisory: [https://support.checkpoint.com/results/sk/sk185033](https://support.checkpoint.com/results/sk/sk185033). Apply the vendor fix referenced above to every affected product listed in this record, then confirm the running version against the vendor advisory.

## Threat activity tracking CVE-2026-50751

9 tracked threats in the Threadlinqs corpus reference CVE-2026-50751, either in the campaign’s CVE list or as an indicator on the campaign record.

- [Emperador Ransomware Group Claims 3.9GB Data Theft from AB InBev (Budweiser, Corona Maker) - Unverified $1M Bitcoin Extortion](https://intel.threadlinqs.com/threat/TL-2026-4469) — MEDIUM · 2026-10-26
- [Qilin Ransomware Suspect Arrested in Japan, Extradited to Germany; Qilin Affiliate Exploited Check Point VPN Zero-Day CVE-2026-50751](https://intel.threadlinqs.com/threat/TL-2026-3004) — HIGH · 2026-10-07
- [Dutch NCSC Warns of Critical Check Point VPN Flaws (CVE-2026-85102, CVE-2026-85103) — Exploitation Expected Imminently](https://intel.threadlinqs.com/threat/TL-2026-2463) — CRITICAL · 2026-09-12
- [Qilin Ransomware Gang Claims Breach of US ATF; Agency Confirms 'Major Incident' on Isolated Investigations System](https://intel.threadlinqs.com/threat/TL-2026-2201) — HIGH · 2026-08-29
- [2026 Ransomware Surge Targeting US Organizations: Identity-First Compromise, BYOVD, and Living-Off-the-Cloud Exfiltration (Qilin, Akira, Clop, INC Ransom, Play, DragonForce, Sinobi)](https://intel.threadlinqs.com/threat/TL-2026-2125) — HIGH · 2026-08-23
- [ChocoPoC RAT Campaign Uses Malicious PoC-Exploit Python Packages to Backdoor Security Researchers](https://intel.threadlinqs.com/threat/TL-2026-1062) — HIGH · 2026-07-02
- [ChocoPoC Campaign: Trojanised PoC Exploits and PyPI Packages Deliver Python RAT Using Mapbox Datasets API as Dead-Drop C2](https://intel.threadlinqs.com/threat/TL-2026-1088) — HIGH · 2026-07-02
- [ChocoPoC: Python RAT Distributed via Trojanized PoC Exploits Targeting Security Researchers](https://intel.threadlinqs.com/threat/TL-2026-1125) — HIGH · 2026-07-01
- [Check Point Remote Access & Mobile Access VPN IKEv1 Authentication Bypass (CVE-2026-50751) Exploited by Qilin Ransomware Affiliate](https://intel.threadlinqs.com/threat/TL-2026-0718) — CRITICAL · 2026-06-08

## Sources

Enriched from CVE.org, NVD, FIRST EPSS, GitHub Security Advisories, public proof-of-concept repositories, ProjectDiscovery Nuclei. Last verified by Threadlinqs on 2026-10-07. This product uses the NVD API but is not endorsed or certified by the NVD.

**Other references**

- [support.checkpoint.com](https://support.checkpoint.com/results/sk/sk185033)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-50751
Full detection coverage and IOCs for threats exploiting CVE-2026-50751 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp