CISA KEV · Known exploitedCritical

CVE-2026-50751

checkpoint Quantum Security Gateway, Spark Firewalls, gaia os

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.

CVSS
9.3
EPSS
82.6%
99.6% percentile
CISA KEV
Listed
Published
2026.06.08
PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV
Exploit probability82.6%
Technical severityCVSS 9.3

Vulnerability overview

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.

Affected product and versions

Product
checkpoint Quantum Security Gateway, Spark Firewalls, gaia os
Affected versions
>= R82.10 with Jumbo Hotfix Take 19 or below, >= R82 with Jumbo Hotfix Take 103 or below, >= R81.20 with Jumbo Hotfix Take 141 or below, >= R81.10, R81, and R80.40, >= R80.20.X, R81.10.X, and R82.00.X, >= r80.40 < r81.20, r81.20, r82, r82.10, >= r80.20.00 < r81.10.17, r81.10.17, >= r80.20.00 < r82.00.10, r82.00.10
Fixed versions
r81.20, r81.10.17, r82.00.10

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
CISA 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.

Due date: 2026.06.11
  1. 1
    Identify

    Confirm that checkpoint Quantum Security Gateway, Spark Firewalls, gaia os and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N
CWE
CWE-287
KEV added
2026.06.08
Ransomware use
확인됨
CVE-2026-50751 — checkpoint Quantum Security Gateway, Spark Firewalls, gaia os | SECUFOCUS NOW