Actively exploitedCVSS 9.3 · CRITICAL

CVE-2026-50751Check Point Security Gateway Improper Authentication Vulnerability

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): 0.8255 (82.6%)

Percentile: 99.6%

EPSS: 2026-08-03

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: 8/4/2026, 5:16:39 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 — the theoretical maximum severity. Remotely exploitable, no privileges required, total impact. Not yet confirmed as exploited in the wild, but patch now. Widely used software only: a 10.0 in a niche plugin does not make it here.

AI-recommended

A language model reviewed the CVE and judged that it affects widely deployed software or common developer tooling. A human on the team approved publication before it landed here.

Impact categories the AI evaluates

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

popular_dev_tooling — Node.js, Python, Go, React, Next.js, common npm/pip libraries.

common_consumer_software — Chrome, Firefox, Windows, macOS, popular mobile apps.

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

niche_software — Regional CMSs, hobby tools, rarely used libraries.

not_relevant — Vendor-specific firmware, discontinued software.

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.