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.
CISA name: Check Point Multiple Products Improper Certificate Validation Vulnerability
CVSS
9.8
CRITICAL
EPSS
7.5%
94th pct
CISA KEV
YES
added 2026-09-22
Ransomware
NO
none known
Why this matters
✓ Confirmed actively exploited (CISA KEV)
✓ Critical base severity (CVSS ≥ 9.0)
✓ Affects 40 tracked products
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.
CYBER DEFENSE MONITORCyronix Intelligence Core