Check Point Multiple Products Improper Certificate Validation Vulnerability (CVE-2026-85102)
Severity: critical · Patch status: patched · Since 2026-09-22 · CVE-2026-85102
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 added CVE-2026-85102 to its Known Exploited Vulnerabilities catalog on Sep 22, 2026, which means attackers are exploiting it in the wild.
What to do
- 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.
- US federal agencies must remediate by Sep 25, 2026 (BOD 22-01); treat that as the outer limit.
Sources
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