CVE-2026-85102 CRITICAL

CVE-2026-85102: Improper Certificate Validation in Quantum Security Gateway

Vendor Checkpoint
Product Quantum Security Gateway
Weakness CWE-295
KEV Status Known Exploited
Published September 9, 2026
Last update September 10, 2026
View on NVD All CVEs

CVSS base score

9.8/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

Improper certificate trust validation during VPN negotiation in Check Point Quantum Security Gateway may allow an unauthenticated remote attacker to execute arbitrary code on the Gateway.

CISA mandated remediation

02CISA Required Action

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Key dates

03Disclosure timeline

September 9, 2026 CVE published
September 10, 2026 Record updated

External resources

04References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2026-85102 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/295.html AskarLabs — CWE-295 write-up Improper Certificate Validation CISA KEV Reference https://support.checkpoint.com/results/sk/sk1000117 CISA KEV Reference https://www.cisa.gov/news-events/directives/bod-26-04-prioriti… CISA KEV Reference https://www.cisa.gov/news-events/directives/bod-26-04-implemen… CISA KEV Reference https://nvd.nist.gov/vuln/detail/CVE-2026-85102