Improper Certificate Validation in Quantum Security Gateway
- Severity
- Critical9.8CVSS 3.1, Critical
- EPSS
- 0.99%
- Published
- 9 Sept 2026
- Updated
- 23 Sept 2026
Description
Title, description and vendor guidance are quoted from the source records.
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.
Weakness: CWE-295
Known exploited
Added to CISA KEV on 22 Sept 2026
Federal remediation due date: 25 Sept 2026
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.
Exploit prediction
0.99% probability of exploitation in the next 30 days (percentile 61%).
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
What the source states, per branch
Versions matched by Patcharo
Check Point Quantum Security GatewaySource: Check Point (CVE record)
| Branch | Affected | Fixed in |
|---|---|---|
| R82.10 | Listed as affected, no patch-level detail | |
| R82 | Listed as affected, no patch-level detail | |
| R81.20 | Listed as affected, no patch-level detail |
Versions not listed are not assessed (shown as Unknown).
References
- https://support.checkpoint.com/results/sk/sk1000117(opens in a new tab)
- https://blog.checkpoint.com/security/security-advisory-action-required-active-exploitation-of-cve-2026-85102-and-a-management-pre-authentication-vulnerability-cve-2026-93616/(opens in a new tab)
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-85102(opens in a new tab)
Provenance
Every fact on this page comes from the sources below. Nothing is written by an AI.
- Check Point (CVE record)
- Check Point (CVE record) · 27 Sept 2026, 23:46 UTC · Parser patcharo-cve5/1.1.0
- CISA Known Exploited Vulnerabilities
- CISA Known Exploited Vulnerabilities · 27 Sept 2026, 23:42 UTC · Parser patcharo-kev/1.0.0
- NVD
- NVD · 27 Sept 2026, 23:44 UTC · Parser patcharo-nvd/1.0.0
- FIRST EPSS
- FIRST EPSS · 27 Sept 2026, 23:46 UTC · Parser patcharo-epss/1.0.0
Last verified: 28 Sept 2026, 02:31 UTC