CVE-2026-85102: Check Point Multiple Products Improper Certificate Validation Vulnerability

In short

Check Point Multiple Products has a weakness classified as improper certificate validation (CWE-295). CISA added it to its Known Exploited Vulnerabilities catalog on 2026-09-22. NVD lists CVSS 3.1 at 9.8 CRITICAL.

What it is

“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.” — CISA KEV, retrieved 2026-11-01

“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.” — NVD, retrieved 2026-11-01

Who is affected

Check Point Multiple Products. NVD lists the following versions as affected:

• Checkpoint Gaia Embedded: from r81.10.00 inclusive, before r81.10.17
• Checkpoint Gaia Embedded: from r82.00.00 inclusive, before r82.00.10
• Checkpoint Gaia Embedded: version r81.10.17
• Checkpoint Gaia Embedded: version r82.00.10
• Checkpoint Gaia OS: from r80 inclusive, before r81.10
• Checkpoint Gaia OS: version r81.10
• Checkpoint Gaia OS: version r81.20
• Checkpoint Gaia OS: version r82
• Checkpoint Gaia OS: version r82.10

Exploitation status

CISA KEV added: 2026-09-22. Known ransomware campaign use: Not reported by CISA. Due date CISA set for US federal civilian agencies: 2026-09-25.

Scores

NVD CVSS 3.1: 9.8 CRITICAL; vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H; source [email protected].

EPSS by FIRST: 54.14%; percentile 99.01; score date 2026-10-31. EPSS estimates the probability of exploitation in the next 30 days.

CWE: CWE-295.

Timeline

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 KEV

What to do

• Confirm whether you run Check Point Multiple Products and which version.
• Apply the vendor update or mitigation in the advisory.
• Follow CISA’s required action.
• Review the vendor guidance on signs of compromise.
• Track the fix through completion.

References

• Mitigation, Patch, Vendor Advisory: https://support.checkpoint.com/results/sk/sk1000117
• NVD detail
• CVE.org record
• CISA KEV catalog

Sources and dates

CISA Known Exploited Vulnerabilities Catalog, version 2026.10.30; retrieved 2026-11-01. CISA KEV data: CC0 1.0. No endorsement by CISA.

NVD retrieved: 2026-11-01. This product uses the NVD API but is not endorsed or certified by the NVD.

EPSS scores by FIRST; score date 2026-10-31.