# CVE-2026-85102: Check Point Security Gateway and Spark Firewall improper certificate validation in VPN

Source: https://junglewise.ai/threats/cve-2026-85102-check-point-security-gateway-and-spark-firewall-improper  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-09. Updated: 2026-09-24  
License: CC BY 4.0 with a link back

CVE-2026-85102 · Severity: critical · CVSS 9.8 · Exploited in the wild · Published 2026-09-09

Check Point security products are widely deployed to protect enterprise networks and authenticate users. An improper certificate validation flaw allows attackers to forge or bypass security certificates, potentially enabling unauthorized access to protected systems and data. CISA has confirmed this vulnerability is actively being exploited by threat actors.

Technologies: [Check Point Security Gateway](https://junglewise.ai/threats/technologies/security-gateway). Vendors: [Check Point](https://junglewise.ai/threats/vendors/check-point).

## Quick answers

**Is CVE-2026-85102 exploited in the wild?** Yes. CVE-2026-85102 is known to be exploited in the wild, first recorded on 22 September 2026. Treat it as urgent.

**How severe is CVE-2026-85102?** Critical severity, with a CVSS score of 9.8, published 9 September 2026.

**Which products and versions are affected?** Check Point Multiple Products.

**Is there a fix for CVE-2026-85102?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-85102 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-85102?** Check whether you run Check Point Security Gateway or Check Point Spark Firewall. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

CVE-2026-85102 is an improper certificate validation vulnerability in Check Point multiple products. The vulnerability allows an attacker to bypass SSL/TLS certificate validation mechanisms, which can be exploited remotely without authentication to establish fraudulent secure connections or perform man-in-the-middle attacks. An attacker can achieve authentication bypass or intercept encrypted communications, gaining unauthorized access to protected resources. This vulnerability has been added to CISA's Known Exploited Vulnerabilities catalog indicating active exploitation. Patches or mitigations should be prioritized based on CISA's BOD 26-04 guidance for federal agencies.

## Affected products

- Check Point Multiple Products

## Timeline

- 2026-09-22: kev added

## References

- [https://www.cisa.gov/news-events/alerts/2026/09/22/cisa-adds-four-known-exploited-vulnerabilities-catalog](https://www.cisa.gov/news-events/alerts/2026/09/22/cisa-adds-four-known-exploited-vulnerabilities-catalog)

## Related threats

- [Check Point VPN authentication bypass in IKEv1 key exchange](https://junglewise.ai/threats/cve-2026-50751-check-point-vpn-authentication-bypass-in-ikev1-key-exchange)
- [Check Point Security Gateway SQL injection in UserCheck Portal](https://junglewise.ai/threats/cve-2026-48134-check-point-security-gateway-sql-injection-in-usercheck-portal)
- [Check Point Security Gateway denial of service in VPN service](https://junglewise.ai/threats/cve-2026-48132-check-point-security-gateway-denial-of-service-in-vpn-service)