CVE-2026-85102

CriticalActively exploited (CISA KEV)

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.

SeverityCritical
CVSS9.8
Exploit probability—
ProductCheck Point Multiple Products
PublishedSep 9, 2026
First seenSep 9, 2026
Added to KEVSep 22, 2026
Weakness typeCWE-295CWE-295

How to fix

CISA 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.

CISA due date: Sep 25, 2026
Update
  • checkpoint gaia_embeddedr81.10.17, r82.00.10 or later
  • checkpoint gaia_osr81.10 or later

Affected products

ProductAffected versionsFixed in
checkpoint gaia_embeddedr81.10.00 ≤ v < r81.10.17, r82.00.00 ≤ v < r82.00.10, r81.10.17, r82.00.10r81.10.17, r82.00.10
checkpoint gaia_osr80 ≤ v < r81.10, r81.10, r81.20, r82, r82.10r81.10

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