CVE-2026-85102Network attack vector

Unauthenticated code execution via untrusted VPN certificates

Published Sep 9, 2026 · Updated Sep 10, 2026

Improper certificate validation in Check Point Quantum Security Gateway allows remote attackers to execute code during VPN negotiation. The gateway incorrectly trusts attacker-controlled certificate data presented to its Remote Access or Site-to-Site VPN negotiation path; Check Point has not disclosed the specific validation branch or parsing operation. Remote Access or Site-to-Site VPN must be in use, and successful exploitation runs arbitrary code on the gateway.

CVSS severity9.8
Critical
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper certificate validation in Check Point Quantum Security Gateway allows remote attackers to execute code during VPN negotiation. The gateway incorrectly trusts attacker-controlled certificate data presented to its Remote Access or Site-to-Site VPN negotiation path; Check Point has not disclosed the specific validation branch or parsing operation. Remote Access or Site-to-Site VPN must be in use, and successful exploitation runs arbitrary code on the gateway.

The record

CVE
CVE-2026-85102
Published
Sep 9, 2026
Updated
Sep 10, 2026
Vendor
Check Point Software Technologies Ltd.
Product
Quantum Security Gateway
Classifications
CWE-295, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=R81.20 with Jumbo Hotfix Take 165 or below
  2. Affected versionversion=R82.10 with Jumbo Hotfix Take 43 or below
  3. Affected versionversion=R82 with Jumbo Hotfix Take 125 or below

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Check Point Software Technologies Ltd. · Quantum Security Gatewayversion=R81.20 with Jumbo Hotfix Take 165 or below; version=R82.10 with Jumbo Hotfix Take 43 or below; version=R82 with Jumbo Hotfix Take 125 or below

Published CVSS scores

9.8Check Point Software Technologies Ltd.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-295Improper Certificate Validation
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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