Critical 9.8Known exploited (CISA KEV)Published Sep 9, 2026

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

Updated under an hour ago (2026-10-19 04:50 UTC)

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It affects checkpoint Quantum Security Gateway and 2 other products. Add what you run to find out whether that includes you.

CISA lists it as known exploited since Sep 22, 2026; federal agencies had to remediate by Sep 25, 2026. Treat that date as your deadline.

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Every CVE for checkpoint Quantum Security Gateway

Exploited in the last 30 days

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.

CVSS: 9.8 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-295
Known exploited: Added to CISA KEV Sep 22, 2026; federal remediation due Sep 25, 2026Apply 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.
EPSS (exploitation in the next 30 days): 50.40% (percentile 99)
Assigned by: checkpoint
NVD analysis: Analyzed
Record last updated: Sep 23, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

checkpoint Quantum Security Gateway checkpoint:quantum_security_gateway (from the name)	R82.10 with Jumbo Hotfix Take 43 or below; R82 with Jumbo Hotfix Take 125 or below; R81.20 with Jumbo Hotfix Take 165 or below	CNA record
checkpoint gaia_embedded checkpoint:gaia_embedded	from r81.10.00 before r81.10.17; from r82.00.00 before r82.00.10; r81.10.17; r81.10.17; r81.10.17; r81.10.17; r81.10.17; r81.10.17; and 13 more ranges	NVD
checkpoint gaia_os checkpoint:gaia_os	from r80 before r81.10; r81.10; r81.10; r81.10; r81.10; r81.10; r81.10; r81.10; and 108 more ranges	NVD

References

https://support.checkpoint.com/results/sk/sk1000117mitigation, patch, vendor-advisory
https://blog.checkpoint.com/security/security-advisory-action-required-active-exploitation-of-cve-2026-85102-and-a-management-pre-authentication-vulnerability-cve-2026-93616/vendor-advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-85102us-government-resource

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.