CVE WatchSep 23, 2026

CVE-2026-85102

Check Point Multiple Products Improper Certificate Validation Vulnerability

CVSS

9.8

Critical

EPSS

54.2%

p99

KEV

YES

Sep 22, 2026

Exploit Today

0-100

Published: Sep 9, 2026 · Last modified: Sep 23, 2026 · CWE-295

EPSS · 30d

1.0%EPSS · 30 days54.2%

2026-09-262026-10-23

KEV catalog record

Product

Check Point / Multiple Products

Vulnerability

Check Point Multiple Products Improper Certificate Validation Vulnerability

Added to KEV

Sep 22, 2026

Remediate by

Sep 25, 2026

Known ransomware use

Summary description

Check Point Security Gateway and Check Point Spark Firewall using Site to Site VPN or Remote Access VPN contain an improper certificate validation vulnerability which could allow an unauthenticated remote attacker to execute arbitrary code on the Gateway.

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.

Notes

https://support.checkpoint.com/results/sk/sk1000117 ; ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-85102

Technical description

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.

Official references

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