Actively exploitedCVSS 9.3 · CRITICAL

CVE-2026-50751

Check Point Security Gateway contains an improper authentication vulnerability in IKEv1 key exchange that could allow an unauthenticated remote attacker to bypass user authentication and establish a remote access VPN connection without a valid user password.

View on NVD

Analysis

Esta vulnerabilidad crítica en Check Point Security Gateway permite a atacantes remotos no autenticados evadir la validación de certificados y conectarse a la VPN sin una contraseña válida. El fallo está siendo explotado activamente en el entorno real, comprometiendo directamente el acceso perimetral a la infraestructura interna de servidores y servicios. Se recomienda actualizar inmediatamente los gateways afectados que todavía utilicen el intercambio de llaves IKEv1.

Relevant roles

CyberSecurityCloudLinuxBackend

Severity

Score: 9.3(CRITICAL)

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N

AV: NETWORK

AC: LOW

PR: NONE

UI: NONE

S: CHANGED

C: HIGH

I: LOW

A: NONE

Weakness (CWE): CWE-287

CISA KEV

Added to KEV: 2026-06-08

Federal patch deadline: 2026-06-11

Known ransomware use: Known

Required action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

EPSS

Probability of exploitation (next 30 days): 0.4115 (41.2%)

Percentile: 98.5%

EPSS: 2026-06-22

Affects

checkpoint:gaia_oscheckpoint:gaia_embeddedcheckpoint:quantum_spark_1530checkpoint:quantum_spark_1550checkpoint:quantum_spark_1570checkpoint:quantum_spark_1570rcheckpoint:quantum_spark_1590checkpoint:quantum_spark_1595rcheckpoint:quantum_spark_1600checkpoint:quantum_spark_1800checkpoint:quantum_spark_1900checkpoint:quantum_spark_2000checkpoint:quantum_spark_1535checkpoint:quantum_spark_1555checkpoint:quantum_spark_1575checkpoint:quantum_spark_1575rcheckpoint:quantum_spark_2530checkpoint:quantum_spark_2550checkpoint:quantum_spark_2560checkpoint:quantum_spark_2570checkpoint:quantum_spark_2580checkpoint:quantum_spark_2590

Technical description

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.

Published: 6/8/2026, 12:16:32 PM

Last modified: 6/17/2026, 10:57:46 AM

References

How to read this card

Actively exploited

KEV (Known Exploited Vulnerabilities) is CISA's catalog of CVEs confirmed as actively exploited in the real world. If a CVE is on KEV, someone is already using it in attacks.

CVSS 10.0

CVSS 10.0 — máxima severidad teórica. Explotable de forma remota, sin privilegios, con impacto total. Aún no confirmada como explotada en el mundo real, pero parchea ya.

AI-recommended

Un modelo de lenguaje revisó el CVE y consideró que afecta a software ampliamente desplegado o herramientas comunes de desarrollo. Un humano del equipo aprobó la publicación antes de que llegara aquí.

Categorías de impacto que evalúa la IA

widely_deployed_infra — kernel Linux, OpenSSL, glibc, k8s, Docker, nginx, OpenSSH.

popular_dev_tooling — Node.js, Python, Go, React, Next.js, librerías comunes de npm/pip.

common_consumer_software — Chrome, Firefox, Windows, macOS, apps móviles populares.

enterprise_saas — GitHub, GitLab, Atlassian, Salesforce, Cisco, Fortinet, Ivanti.

niche_software — CMS regionales, herramientas de hobby, librerías de poco uso.

not_relevant — firmware específico de proveedor, software descontinuado.

EPSS — EPSS (Exploit Prediction Scoring System) by FIRST.org estimates the probability that a CVE will be exploited in the next 30 days. Range is 0 to 1; very fresh CVEs typically score low until evidence accumulates.