CVE-2026-85102
Improper Certificate Validation in Quantum Security Gateway
KEVCRITICAL 9.8EPSS 50.4%
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.
- Affected
- checkpoint · Quantum Security Gateway
- CVSS v3.1 CHECKPOINT
- 9.8 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS
- 50.40% chance of exploitation in the next 30 days, 99th percentile
- CISA KEV
- added 2026-09-22
- Published
- 2026-09-09
- Updated
- 2026-09-23
Proof-of-concept exploits (2)
- https://blog.checkpoint.com/security/security-advisory-action-required-active-exploitatio…
- aduli198/CVE-2026-851020★ · 2026-10-07
Security advisories
- https://blog.checkpoint.com/security/security-advisory-action-required-active-exploitatio…
- https://support.checkpoint.com/results/sk/sk1000117